Added 26 solutions
This commit is contained in:
rshaghoulian
@@ -0,0 +1,62 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.util.Scanner;
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import java.util.BitSet;
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public class Solution {
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public static void main(String[] args) {
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Scanner scan = new Scanner(System.in);
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int N = scan.nextInt();
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int M = scan.nextInt();
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BitSet B1 = new BitSet(N);
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BitSet B2 = new BitSet(N);
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while (M-- > 0) {
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String str = scan.next();
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int a = scan.nextInt();
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int b = scan.nextInt();
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switch (str) {
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case "AND":
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if (a == 1) {
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B1.and(B2);
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} else {
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B2.and(B1);
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}
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break;
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case "OR":
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if (a == 1) {
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B1.or(B2);
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} else {
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B2.or(B1);
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}
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break;
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case "XOR":
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if (a == 1) {
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B1.xor(B2);
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} else {
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B2.xor(B1);
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}
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break;
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case "FLIP":
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if (a == 1) {
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B1.flip(b);
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} else {
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B2.flip(b);
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}
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break;
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case "SET":
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if (a == 1) {
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B1.set(b);
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} else {
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B2.set(b);
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}
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break;
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default:
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break;
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}
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System.out.println(B1.cardinality() + " " + B2.cardinality());
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}
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}
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}
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@@ -0,0 +1,47 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.util.*;
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class Checker implements Comparator<Player> {
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@Override
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public int compare(Player p1, Player p2) {
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if (p1.score == p2.score) {
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return p1.name.compareTo(p2.name);
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} else {
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return p2.score - p1.score;
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}
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}
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}
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class Player{
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String name;
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int score;
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Player(String name, int score){
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this.name = name;
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this.score = score;
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}
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}
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class Solution {
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public static void main(String[] args) {
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Scanner scan = new Scanner(System.in);
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int n = scan.nextInt();
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Player[] player = new Player[n];
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Checker checker = new Checker();
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for(int i = 0; i < n; i++){
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player[i] = new Player(scan.next(), scan.nextInt());
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}
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scan.close();
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Arrays.sort(player, checker);
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for(int i = 0; i < player.length; i++){
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System.out.printf("%s %s\n", player[i].name, player[i].score);
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}
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}
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}
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@@ -0,0 +1,55 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.util.Scanner;
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import java.util.Deque;
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import java.util.ArrayDeque;
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import java.util.HashMap;
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// O(n) runtime
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// O(n) space complexity
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public class test {
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public static void main(String[] args) {
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/* Create our data structures */
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Deque<Integer> deque = new ArrayDeque<>();
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HashMap<Integer, Integer> map = new HashMap<>();
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/* Save first m entries */
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Scanner scan = new Scanner(System.in);
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int n = scan.nextInt();
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int m = scan.nextInt();
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for (int i = 0; i < m; i++) {
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int num = scan.nextInt();
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deque.add(num);
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if (map.containsKey(num)) {
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map.put(num, map.get(num) + 1);
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} else {
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map.put(num, 1);
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}
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}
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/* Loop through remaining n-m entries */
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int max = map.size();
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for (int i = m; i < n; i++) {
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/* Remove old value */
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int old = deque.remove();
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if (map.get(old) == 1) {
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map.remove(old);
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} else {
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map.put(old, map.get(old) - 1);
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}
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/* Add new value */
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int num = scan.nextInt();
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deque.add(num);
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if (map.containsKey(num)) {
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map.put(num, map.get(num) + 1);
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} else {
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map.put(num, 1);
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}
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max = Math.max(max, map.size());
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}
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System.out.println(max);
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}
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}
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@@ -0,0 +1,35 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.io.IOException;
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import java.lang.reflect.Method;
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class Printer<T> {
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void printArray(T[] array) {
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for (T item : array) {
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System.out.println(item);
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}
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}
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}
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public class Solution {
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public static void main( String args[] ) {
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Printer myPrinter = new Printer();
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Integer[] intArray = { 1, 2, 3 };
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String[] stringArray = {"Hello", "World"};
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myPrinter.printArray(intArray);
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myPrinter.printArray(stringArray);
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int count = 0;
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for (Method method : Printer.class.getDeclaredMethods()) {
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String name = method.getName();
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if(name.equals("printArray"))
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count++;
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}
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if(count > 1)System.out.println("Method overloading is not allowed!");
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}
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}
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@@ -0,0 +1,31 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.io.*;
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import java.util.*;
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import java.text.*;
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import java.math.*;
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import java.util.regex.*;
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public class Solution {
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public static void main(String[] args) {
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Scanner s = new Scanner(System.in);
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int t = s.nextInt();
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String [] pair_left = new String[t];
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String [] pair_right = new String[t];
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for (int i = 0; i < t; i++) {
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pair_left[i] = s.next();
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pair_right[i] = s.next();
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}
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s.close();
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HashSet<String> set = new HashSet<>(t);
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for (int i = 0; i < t; i++) {
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set.add(pair_left[i] + " " + pair_right[i]);
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System.out.println(set.size());
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}
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}
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}
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@@ -0,0 +1,39 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.util.Scanner;
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import java.util.LinkedList;
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public class Solution {
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public static void main(String[] args) {
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/* Create and fill Linked List of Integers */
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Scanner scan = new Scanner(System.in);
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int N = scan.nextInt();
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LinkedList<Integer> list = new LinkedList<>();
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for (int i = 0; i < N; i++) {
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int value = scan.nextInt();
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list.add(value);
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}
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/* Perfrom queries on Linked List */
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int Q = scan.nextInt();
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for (int i = 0; i < Q; i++) {
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String action = scan.next();
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if (action.equals("Insert")) {
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int index = scan.nextInt();
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int value = scan.nextInt();
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list.add(index, value);
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} else { // "Delete"
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int index = scan.nextInt();
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list.remove(index);
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}
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}
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scan.close();
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/* Print our updated Linked List */
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for (Integer num : list) {
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System.out.print(num + " ");
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}
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}
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}
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@@ -0,0 +1,35 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.io.BufferedReader;
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import java.io.InputStreamReader;
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import java.util.HashMap;
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/* BufferedReader is used instead of Scanner since it's faster and
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won't time out on HackerRank test cases when using Java8 */
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class Solution {
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public static void main(String [] args) throws Exception {
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/* Read input and save as entries in a HashMap */
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BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
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int n = Integer.valueOf(br.readLine());
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HashMap<String, Integer> map = new HashMap<>();
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while (n-- > 0) {
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String name = br.readLine();
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int phone = Integer.valueOf(br.readLine());
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map.put(name, phone);
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}
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/* Read each query and check if its in our HashMap */
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String s;
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while((s = br.readLine()) != null) {
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if (map.containsKey(s)) {
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System.out.println(s + "=" + map.get(s));
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} else {
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System.out.println("Not found");
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}
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}
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br.close();
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}
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}
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@@ -0,0 +1,68 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.util.Scanner;
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import java.util.List;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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class Student{
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private int id;
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private String fname;
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private double cgpa;
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public Student(int id, String fname, double cgpa) {
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super();
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this.id = id;
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this.fname = fname;
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this.cgpa = cgpa;
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}
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public int getId() {
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return id;
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}
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public String getFname() {
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return fname;
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}
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public double getCgpa() {
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return cgpa;
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}
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}
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public class Solution {
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public static void main(String[] args){
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Scanner scan = new Scanner(System.in);
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int testCases = Integer.parseInt(scan.nextLine());
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List<Student> studentList = new ArrayList<Student>();
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while (testCases-- > 0) {
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int id = scan.nextInt();
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String fname = scan.next();
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double cgpa = scan.nextDouble();
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Student st = new Student(id, fname, cgpa);
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studentList.add(st);
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}
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scan.close();
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Collections.sort(studentList, new StudentComparator());
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for (Student st: studentList) {
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System.out.println(st.getFname());
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}
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}
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}
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class StudentComparator implements Comparator<Student> {
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double epsilon = 0.001; // since we shouldn't use "==" with doubles
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@Override
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public int compare(Student s1, Student s2) {
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if (Math.abs(s1.getCgpa() - s2.getCgpa()) > epsilon) {
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return s1.getCgpa() < s2.getCgpa() ? 1 : -1; // descending order
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} else if (!s1.getFname().equals(s2.getFname())) {
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return s1.getFname().compareTo(s2.getFname());
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} else {
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return s1.getId() - s2.getId();
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}
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}
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}
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@@ -0,0 +1,44 @@
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// Author: Rodney Shaghoulian
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// Github: github.com/rshaghoulian
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// HackerRank: hackerrank.com/rshaghoulian
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import java.util.Scanner;
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import java.util.Stack;
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import java.util.HashMap;
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class Solution {
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public static void main(String[] args) {
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/* Create HashMap to match opening brackets with closing brackets */
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HashMap<Character, Character> map = new HashMap<>();
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map.put('(', ')');
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map.put('[', ']');
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map.put('{', '}');
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/* Test each expression for validity */
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Scanner scan = new Scanner(System.in);
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while (scan.hasNext()) {
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String expression = scan.next();
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System.out.println(isBalanced(expression, map) ? "true" : "false" );
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}
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scan.close();
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}
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public static boolean isBalanced(String expression, HashMap<Character, Character> map) {
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/* Odd length strings are not balanced */
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if ((expression.length() % 2) != 0) {
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return false;
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}
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Stack<Character> stack = new Stack<>();
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for (int i = 0; i < expression.length(); i++) {
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Character ch = expression.charAt(i);
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if (map.containsKey(ch)) {
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stack.push(ch);
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} else if (stack.isEmpty() || ch != map.get(stack.pop())) {
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return false;
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}
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}
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return stack.isEmpty();
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}
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}
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+67
-24
@@ -1,26 +1,69 @@
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## Java
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| Domain | Subdomain | Challenge | Difficulty | Solution |
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||||
|:------:|:---------------------------:|:------------------------------------------------------------------------------------------------------------------------:|:----------:|:-----------------------------------------------------------------------------------------------------------------------------------------------------:|
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||||
| Java | Introduction | [Welcome to Java!](https://www.hackerrank.com/challenges/welcome-to-java) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Welcome%20to%20Java!/Solution.java) |
|
||||
| Java | Introduction | [Java Stdin and Stdout I](https://www.hackerrank.com/challenges/java-stdin-and-stdout-1) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20I/Solution.java) |
|
||||
| Java | Introduction | [Java If-Else](https://www.hackerrank.com/challenges/java-if-else) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20If-Else/Solution.java) |
|
||||
| Java | Introduction | [Java Stdin and Stdout II](https://www.hackerrank.com/challenges/java-stdin-stdout) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20II/Solution.java) |
|
||||
| Java | Introduction | [Java Output Formatting](https://www.hackerrank.com/challenges/java-output-formatting) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Output%20Formatting/Solution.java) |
|
||||
| Java | Introduction | [Java Loops I](https://www.hackerrank.com/challenges/java-loops-i) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20I/Solution.java) |
|
||||
| Java | Introduction | [Java Loops II](https://www.hackerrank.com/challenges/java-loops) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20II/Solution.java) |
|
||||
| Java | Introduction | [Java Datatypes](https://www.hackerrank.com/challenges/java-datatypes) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Datatypes/Solution.java) |
|
||||
| Java | Introduction | [Java End-of-file](https://www.hackerrank.com/challenges/java-end-of-file) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20End-of-file/Solution.java) |
|
||||
| Java | Introduction | [Java Static Initializer Block](https://www.hackerrank.com/challenges/java-static-initializer-block) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Static%20Initializer%20Block/Solution.java) |
|
||||
| Java | Introduction | [Java Int to String](https://www.hackerrank.com/challenges/java-int-to-string) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Int%20to%20String/Solution.java) |
|
||||
| Java | Introduction | [Java Data and Time](https://www.hackerrank.com/challenges/java-date-and-time) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Date%20and%20Time/Solution.java) |
|
||||
| Java | Introduction | [Java Currency Formatter](https://www.hackerrank.com/challenges/java-currency-formatter) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Currency%20Formatter/Solution.java) |
|
||||
| Java | Strings | [Java Strings Introduction](https://www.hackerrank.com/challenges/java-strings-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Strings%20Introduction/Solution.java) |
|
||||
| Java | Strings | [Java Substring](https://www.hackerrank.com/challenges/java-substring) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Substring/Solution.java) |
|
||||
| Java | Strings | [Java String Compare](https://www.hackerrank.com/challenges/java-string-compare) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Compare/Solution.java) |
|
||||
| Java | Strings | [Java String Reverse](https://www.hackerrank.com/challenges/java-string-reverse) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Reverse/Solution.java) |
|
||||
| Java | Strings | [Java Anagrams](https://www.hackerrank.com/challenges/java-anagrams) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Anagrams/Solution.java) |
|
||||
| Java | Strings | [Java String Tokens](https://www.hackerrank.com/challenges/java-string-tokens) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Tokens/Solution.java) |
|
||||
| Java | Strings | [Pattern Syntax Checker](https://www.hackerrank.com/challenges/pattern-syntax-checker) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Pattern%20Syntax%20Checker/Solution.java) |
|
||||
| Java | Strings | [Java Regex](https://www.hackerrank.com/challenges/java-regex) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex/Solution.java) |
|
||||
| Java | Strings | [Java Regex 2 - Duplicate Words](https://www.hackerrank.com/challenges/duplicate-word) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%202%20-%20Duplicate%20Words/Solution.java) |
|
||||
| Domain | Subdomain | Challenge | Difficulty | Solution |
|
||||
|:------:|:---------------------------:|:------------------------------------------------------------------------------------------------------------------------:|:----------:|:------------------------------------------------------------------------------------------------------------------------------------------------------:|
|
||||
| Java | Introduction | [Welcome to Java!](https://www.hackerrank.com/challenges/welcome-to-java) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Welcome%20to%20Java!/Solution.java) |
|
||||
| Java | Introduction | [Java Stdin and Stdout I](https://www.hackerrank.com/challenges/java-stdin-and-stdout-1) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20I/Solution.java) |
|
||||
| Java | Introduction | [Java If-Else](https://www.hackerrank.com/challenges/java-if-else) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20If-Else/Solution.java) |
|
||||
| Java | Introduction | [Java Stdin and Stdout II](https://www.hackerrank.com/challenges/java-stdin-stdout) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20II/Solution.java) |
|
||||
| Java | Introduction | [Java Output Formatting](https://www.hackerrank.com/challenges/java-output-formatting) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Output%20Formatting/Solution.java) |
|
||||
| Java | Introduction | [Java Loops I](https://www.hackerrank.com/challenges/java-loops-i) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20I/Solution.java) |
|
||||
| Java | Introduction | [Java Loops II](https://www.hackerrank.com/challenges/java-loops) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20II/Solution.java) |
|
||||
| Java | Introduction | [Java Datatypes](https://www.hackerrank.com/challenges/java-datatypes) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Datatypes/Solution.java) |
|
||||
| Java | Introduction | [Java End-of-file](https://www.hackerrank.com/challenges/java-end-of-file) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20End-of-file/Solution.java) |
|
||||
| Java | Introduction | [Java Static Initializer Block](https://www.hackerrank.com/challenges/java-static-initializer-block) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Static%20Initializer%20Block/Solution.java) |
|
||||
| Java | Introduction | [Java Int to String](https://www.hackerrank.com/challenges/java-int-to-string) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Int%20to%20String/Solution.java) |
|
||||
| Java | Introduction | [Java Data and Time](https://www.hackerrank.com/challenges/java-date-and-time) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Date%20and%20Time/Solution.java) |
|
||||
| Java | Introduction | [Java Currency Formatter](https://www.hackerrank.com/challenges/java-currency-formatter) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Currency%20Formatter/Solution.java) |
|
||||
| Java | Strings | [Java Strings Introduction](https://www.hackerrank.com/challenges/java-strings-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Strings%20Introduction/Solution.java) |
|
||||
| Java | Strings | [Java Substring](https://www.hackerrank.com/challenges/java-substring) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Substring/Solution.java) |
|
||||
| Java | Strings | [Java String Compare](https://www.hackerrank.com/challenges/java-string-compare) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Compare/Solution.java) |
|
||||
| Java | Strings | [Java String Reverse](https://www.hackerrank.com/challenges/java-string-reverse) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Reverse/Solution.java) |
|
||||
| Java | Strings | [Java Anagrams](https://www.hackerrank.com/challenges/java-anagrams) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Anagrams/Solution.java) |
|
||||
| Java | Strings | [Java String Tokens](https://www.hackerrank.com/challenges/java-string-tokens) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Tokens/Solution.java) |
|
||||
| Java | Strings | [Pattern Syntax Checker](https://www.hackerrank.com/challenges/pattern-syntax-checker) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Pattern%20Syntax%20Checker/Solution.java) |
|
||||
| Java | Strings | [Java Regex](https://www.hackerrank.com/challenges/java-regex) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex/Solution.java) |
|
||||
| Java | Strings | [Java Regex 2 - Duplicate Words](https://www.hackerrank.com/challenges/duplicate-word) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%202%20-%20Duplicate%20Words/Solution.java) |
|
||||
| Java | Strings | [Java Regex 3 - Username Checker](https://www.hackerrank.com/challenges/valid-username-checker) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%203%20-%20Username%20Checker/Solution.java) |
|
||||
| Java | Strings | [Tag Content Extractor](https://www.hackerrank.com/challenges/tag-content-extractor) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Tag%20Content%20Extractor/Solution.java) |
|
||||
| Java | BigNumber | [Java BigInteger](https://www.hackerrank.com/challenges/java-biginteger) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20BigInteger/Solution.java) |
|
||||
| Java | BigNumber | [Java BigDecimal](https://www.hackerrank.com/challenges/java-bigdecimal) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20BigDecimal/Solution.java) |
|
||||
| Java | BigNumber | [Java Primality Test](https://www.hackerrank.com/challenges/java-primality-test) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20Primality%20Test/Solution.java) |
|
||||
| Java | Data Structures | [Java 1D Array](https://www.hackerrank.com/challenges/java-1d-array-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%201D%20Array/Solution.java) |
|
||||
| Java | Data Structures | [Java 2D Array](https://www.hackerrank.com/challenges/java-2d-array) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%202D%20Array/Solution.java) |
|
||||
| Java | Data Structures | [Java Subarray](https://www.hackerrank.com/challenges/java-negative-subarray) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Subarray/Solution.java) |
|
||||
| Java | Data Structures | [Java Arraylist](https://www.hackerrank.com/challenges/java-arraylist) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20ArrayList/Solution.java) |
|
||||
| Java | Data Structures | [Java 1D Array (Part 2)](https://www.hackerrank.com/challenges/java-1d-array) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%201D%20Array%20(Part%202)/Solution.java) |
|
||||
| Java | Data Structures | [Java List](https://www.hackerrank.com/challenges/java-list) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20List/Solution.java) |
|
||||
| Java | Data Structures | [Java Map](https://www.hackerrank.com/challenges/phone-book) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Map/Solution.java) |
|
||||
| Java | Data Structures | [Java Stack](https://www.hackerrank.com/challenges/java-stack) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Stack/Solution.java) |
|
||||
| Java | Data Structures | [Java Hashset](https://www.hackerrank.com/challenges/java-hashset) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Hashset/Solution.java) |
|
||||
| Java | Data Structures | [Java Generics](https://www.hackerrank.com/challenges/java-generics) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Generics/Solution.java) |
|
||||
| Java | Data Structures | [Java Comparator](https://www.hackerrank.com/challenges/java-comparator) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Comparator/Solution.java) |
|
||||
| Java | Data Structures | [Java Sort](https://www.hackerrank.com/challenges/java-sort) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Sort/Solution.java) |
|
||||
| Java | Data Structures | [Java Dequeue](https://www.hackerrank.com/challenges/java-dequeue) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Dequeue/Solution.java) |
|
||||
| Java | Data Structures | [Java BitSet](https://www.hackerrank.com/challenges/java-bitset) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20BitSet/Solution.java) |
|
||||
| Java | Data Structures | [Java Priority Queue](https://www.hackerrank.com/challenges/java-priority-queue) | Medium | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Inheritance I](https://www.hackerrank.com/challenges/java-inheritance-1) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Inheritance II](https://www.hackerrank.com/challenges/java-inheritance-2) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Abstract Class](https://www.hackerrank.com/challenges/java-abstract-class) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Interface](https://www.hackerrank.com/challenges/java-interface) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Method Overriding](https://www.hackerrank.com/challenges/java-method-overriding) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Method Overriding 2 (Super Keyword)](https://www.hackerrank.com/challenges/java-method-overriding-2-super-keyword) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Instanceof keyword](https://www.hackerrank.com/challenges/java-instanceof-keyword) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Java Iterator](https://www.hackerrank.com/challenges/java-iterator) | Easy | Coming Soon! |
|
||||
| Java | Object Oriented Programming | [Calculating Volume](https://www.hackerrank.com/challenges/calculating-volume) | Medium | Coming Soon! |
|
||||
| Java | Exception Handling | [Java Exception Handling (Try-catch)](https://www.hackerrank.com/challenges/java-exception-handling-try-catch) | Easy | Coming Soon! |
|
||||
| Java | Exception Handling | [Java Exception Handling](https://www.hackerrank.com/challenges/java-exception-handling) | Easy | Coming Soon! |
|
||||
| Java | Advanced | [Java Varargs - Simple Addition](https://www.hackerrank.com/challenges/simple-addition-varargs) | Easy | Coming Soon! |
|
||||
| Java | Advanced | [Java Reflection - Attributes](https://www.hackerrank.com/challenges/java-reflection-attributes) | Easy | Coming Soon! |
|
||||
| Java | Advanced | [Can You Access](https://www.hackerrank.com/challenges/can-you-access) | Medium | Coming Soon! |
|
||||
| Java | Advanced | [Prime Checker](https://www.hackerrank.com/challenges/prime-checker) | Medium | Coming Soon! |
|
||||
| Java | Advanced | [Java Factory Pattern](https://www.hackerrank.com/challenges/java-factory) | Easy | Coming Soon! |
|
||||
| Java | Advanced | [Java Singleton Pattern](https://www.hackerrank.com/challenges/java-singleton) | Easy | Coming Soon! |
|
||||
| Java | Advanced | [Java Visitor Pattern](https://www.hackerrank.com/challenges/java-vistor-pattern) | Medium | Coming Soon! |
|
||||
| Java | Advanced | [Java Annotations](https://www.hackerrank.com/challenges/java-annotations) | Medium | Coming Soon! |
|
||||
| Java | Advanced | [Covariant Return Types](https://www.hackerrank.com/challenges/java-covariance) | Easy | Coming Soon! |
|
||||
| Java | Advanced | [Java Lambda Expressions](https://www.hackerrank.com/challenges/java-lambda-expressions) | Medium | Coming Soon! |
|
||||
| Java | Advanced | [Java MD5](https://www.hackerrank.com/challenges/java-md5) | Medium | Coming Soon! |
|
||||
| Java | Advanced | [Java SHA-256](https://www.hackerrank.com/challenges/sha-256) | Medium | Coming Soon! |
|
||||
|
||||
Reference in New Issue
Block a user