【LeetCode刷题】- 实现strStr()

Task:

代码：

class Solution {
public:
    int strStr(string haystack, string needle) {
        if(needle.size() == 0)
            return 0;
        for(int i = 0; i < haystack.size(); i++){
            if(i+needle.size()-1 >= haystack.size())
                return -1;
            int flag = 1;
            for(int j = 0; j 

提交结果：