Added BigDecimal

src/com/sks/hkr/java/bigNumber/BigDecimalProblem.java

@@ -0,0 +1,40 @@
+package com.sks.hkr.java.bigNumber;
+
+import java.math.BigDecimal;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.Scanner;
+
+public class BigDecimalProblem {
+
+    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();
+        }
+        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) {
+                BigDecimal a = new BigDecimal(s1);
+                BigDecimal b = new BigDecimal(s2);
+                return b.compareTo(a); // descending order
+            }
+        };
+
+        Arrays.sort(s, 0, n, customComparator);
+
+        //Output
+        for (int i = 0; i < n; i++) {
+            System.out.println(s[i]);
+        }
+    }
+}