Added 25 solutions

Java/BigNumber/Java BigDecimal/Solution.java

@@ -4,17 +4,22 @@
 
 import java.math.BigDecimal;
 import java.util.*;
-class Solution{
+
+class Solution {
     public static void main(String []args){
         //Input
-        Scanner sc= new Scanner(System.in);
-        int n=sc.nextInt();
-        String []s=new String[n+2];
-        for(int i=0;i<n;i++){
-            s[i]=sc.next();
+        Scanner sc = new Scanner(System.in);
+        int n = sc.nextInt();
+        String [] s = new String[n+2];
+        for (int i = 0; i < n; i++) {
+            s[i] = sc.next();
         }
         sc.close();
-
+        
+        // We want to sort in descending order while preserving the contents 
+        // of each String. A comparator can achieve this for us. We convert  
+        // to BigDecimal inside our comparator so that the change is not 
+        // permanent and our String's form for each number is preserved.
         Comparator<String> customComparator = new Comparator<String>() {
             @Override
             public int compare(String s1, String s2) {
@@ -27,8 +32,7 @@ class Solution{
         Arrays.sort(s, 0, n, customComparator);
         
         //Output
-        for(int i=0;i<n;i++)
-        {
+        for (int i = 0; i < n; i++) {
             System.out.println(s[i]);
         }
     }