FindTheDifference.java

/*
Question No. 389
Find the Difference

You are given two strings s and t.

String t is generated by random shuffling string s and then add one more letter at a random position.

Return the letter that was added to t.

 

Example 1:

Input: s = "abcd", t = "abcde"
Output: "e"
Explanation: 'e' is the letter that was added.

Example 2:

Input: s = "", t = "y"
Output: "y"

 

Constraints:

    0 <= s.length <= 1000
    t.length == s.length + 1
    s and t consist of lowercase English letters.


*/
class Solution {
    public char findTheDifference(String s, String t) {
        int sumofS=0,sumofT=0;
        for(int i=0;i<s.length();i++){
            sumofS=sumofS+(int)s.charAt(i);
        }

        for(int i=0;i<t.length();i++){
            sumofT=sumofT+(int)t.charAt(i);
        }

        return (char)(Math.abs(sumofT-sumofS));   

        
    }
}