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findTheDifference.java
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42 lines (24 loc) · 830 Bytes
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// Given two strings s and t which consist of only lowercase letters.
// String t is generated by random shuffling string s and then add one more letter at a random position.
// Find the letter that was added in t.
// Example:
// Input:
// s = "abcd"
// t = "abcde"
// Output:
// e
// Explanation:
// 'e' is the letter that was added.
public class Solution {
public char findTheDifference(String s, String t) {
int charCodeS = 0;
int charCodeT = 0;
for(int i = 0; i < s.length(); i++) {
charCodeS += (int)(s.charAt(i));
}
for(int i = 0; i < t.length(); i++) {
charCodeT += (int)(t.charAt(i));
}
return (char)(charCodeT - charCodeS);
}
}