Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 解题思路一: 暴力枚举,JAVA实现如下: static public int strStr(String haystack, String needle) { for(int i=0;i<=haystack.length()-needle.len…

#pragma once #include "000库函数.h" /*********************自解**************/ //使用算法中的find 12ms class Solution { public: int strStr(string haystack, string needle) { && needle.size() != ); ); return haystack.find(needle); } }; /**************…

Implement strStr(). Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Example 1: Input: haystack = "hello", needle = "ll" Output: 2 Example 2: Input: haystack = "aaaaa",…

实现 strStr().返回蕴含在 haystack 中的 needle 的第一个字符的索引,如果 needle 不是 haystack 的一部分则返回 -1 .例 1:输入: haystack = "hello", needle = "ll"输出: 2例 2:输入: haystack = "aaaaa", needle = "bba"输出: -1详见:https://leetcode.com/problems/impleme…

题目要求:Implement strStr() Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Java: public int strStr(String haystack, String needle) { if (haystack == null || needle == null) {…

Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can find by performing this transformation. For example: Given "aacecaaa", return "aaacecaaa&qu…

我在github有对PHP源码更详细的注解.感兴趣的可以围观一下,给个star.PHP5.4源码注解.可以通过commit记录查看已添加的注解. strpos mixed strpos ( string $haystack, mixed $needle [, int $offset = 0 ] ) 如果offset指定了,查找会从offset的位置开始.offset不能为负数. 返回needle第一次出现在haystack的位置.如果在haystack中找不到needle,则返回FALSE. n…

Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Update (2014-11-02): The signature of the function had been updated to return the index instead of the pointer. If you still…

strstr函数:返回主串中子字符串的位置后的所有字符. #include <stdio.h> const char *my_strstr(const char *str, const char *sub_str) { ; str[i] != '\0'; i++) { int tem = i; //tem保留主串中的起始判断下标位置 ; while(str[i++] == sub_str[j++]) { if(sub_str[j] == '\0') { return &str[tem]…

Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 1 class Solution(object): def strStr(self, haystack, needle): """ :type haystack: str :type needle: str :rtype: in…