389. Find the Difference
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.
package leetcode.easy;
public class FindTheDifference {
public char findTheDifference(String s, String t) {
char[] first = s.toCharArray();
char[] second = t.toCharArray();
int res = 0;
for (int i = 0; i < first.length; i++) {
res += second[i];
res -= first[i];
}
res += second[second.length - 1];
return (char) res;
}
@org.junit.Test
public void test() {
System.out.println(findTheDifference("abcd", "abcde"));
}
}
LeetCode_389. Find the Difference
原文：https://www.cnblogs.com/denggelin/p/11879691.html