乘风破浪:LeetCode真题_028_Implement strStr() 一.前言     这次是字符串匹配问题,找到最开始匹配的位置,并返回. 二.Implement strStr() 2.1 问题     当模式串为空的时候,返回索引0,空字符串也是一个字符串. 2.2 分析与解决     注意到一些细节之后,我们首先想到了用笨办法来解决,其次又想到了KMP算法来匹配,需要求next数组.     笨办法比较: class Solution { public int strStr(Str…

Implement strstr() 实现strstr函数功能 whowhoha@outlook.com Question: Implement strstr(). Returns the index of the first occurrence of needle in haystack, or –1 if needle is not part of haystack. int strStr(string haystack, string needle) { for (int i = 0;…

每天 3 分钟,走上算法的逆袭之路. 前文合集 每日一道 LeetCode 前文合集 代码仓库 GitHub: https://github.com/meteor1993/LeetCode Gitee: https://gitee.com/inwsy/LeetCode 题目:实现 strStr() 题目来源:https://leetcode-cn.com/problems/implement-strstr/ 实现 strStr() 函数. 给定一个 haystack 字符串和一个 needle…

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…

Github leetcode 我的解题仓库   https://github.com/interviewcoder/leetcode 题目: 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 ha…

LeetCode解题之Implement strStr() 原题 实现字符串子串匹配函数strStr(). 假设字符串A是字符串B的子串.则返回A在B中首次出现的地址.否则返回-1. 注意点: - 空字符串是全部字符串的子串,返回0 样例: 输入: haystack = "abc", needle = "bc" 输出: 1 输入: haystack = "abc", needle = "gd" 输出: -1 解题思路 字符串匹…

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",…

Implement strStr(). Returns a pointer to the first occurrence of needle in haystack, or null if needle is not part of haystack. I wrote that function before in practice without knowing anything about strStr(), so I have a pretty clear brute-force sol…

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",…

[题目] Implement strStr(). Returns a pointer to the first occurrence of needle in haystack, or null if needle is not part of haystack. [题意] 实现库函数strStr(), 功能是在字符串haystack中找出目标串needle第一次出现的索引位 [思路] 字符串的匹配,能够用暴力解法,但不推荐.一般使用KMP算法求解. 简要介绍一下KMP的思想: haystack…