查找表类算法//有效的字母异位词

给定两个字符串 s 和 t ,编写一个函数来判断 t 是否是 s 的一个字母异位词。

示例 1:

输入: s = "anagram", t = "nagaram"
输出: true

示例 2:

输入: s = "rat", t = "car"
输出: false

说明:
你可以假设字符串只包含小写字母。

进阶:
如果输入字符串包含 unicode 字符怎么办?你能否调整你的解法来应对这种情况?

class Solution {
    public boolean isAnagram(String s, String t) {
        if(s.length()!=t.length())
            return false;
        int []sArray = new int[26];
        int []tArray = new int[26];
        for(int i = 0; i < s.length(); i++){
            sArray[s.charAt(i)-97]++;
            tArray[t.charAt(i)-97]++;
        }
        for(int i = 0; i < 26; i++){
            if(sArray[i] != tArray[i])
                return false;
        }
        return true;
    }
}

 

posted @ 2018-11-04 19:38  strawqqhat  阅读(96)  评论(0编辑  收藏  举报
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