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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[] sarr = new int[26]; int[] tarr = new int[26]; Arrays.fill(sarr, 0); Arrays.fill(tarr, 0); for (int i=0; i<s.length(); i++) { char ch = s.charAt(i); sarr[ch-‘a‘] ++; } for (int i=0; i<t.length(); i++) { char ch = t.charAt(i); tarr[ch-‘a‘] ++; } for (int i=0; i<26; i++) { if (tarr[i] != sarr[i]) { return (char)(i+(int)‘a‘); } } return ‘a‘; } }
LeetCode - 389. Find the Difference
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原文地址：http://www.cnblogs.com/wxisme/p/5940695.html
