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Implement strStr().
Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
Tags:Two Pointers String
Similar Problems:(H) Shortest Palindrome
该题目要求返回needle在haystack中第一次出现的位置,如果没找到,则返回-1。
1 class Solution { 2 public: 3 int strStr(string haystack, string needle) { 4 string::size_type pos; 5 pos = haystack.find(needle); 6 if(pos != string::npos) 7 return pos; 8 return -1; 9 } 10 };
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原文地址:http://www.cnblogs.com/whl2012/p/5745143.html