reverse integer java

Author: GouravRusiya30

Java/reverse-integer.java

@@ -0,0 +1,27 @@
+/**
+* Not a very good approach.
+* StringBuilder reverse function used.
+* 
+* Time Complexity: O(n)
+* Space Complexity: O(n)
+*/
+class Solution {
+    public int reverse(int x) {
+        StringBuilder sb = new StringBuilder(""+x);
+        sb.reverse();
+        String str = sb.toString();
+        
+        if(str.charAt(str.length()-1) == '-') {
+            str = "-" + str.substring(0, str.length()-1);
+        }
+        int ans = 0;
+        
+        try{
+            ans = Integer.parseInt(str);
+        } catch(Exception ex){
+            return 0;
+        }
+        
+        return ans;
+    }
+}