classSolution{public:intstrStr(string haystack, string needle){/* find the first needle in haystack */intret =-1, pos =0;intneedle_len = needle.size();//bool sign = false;for(inti =0; i < haystack.size(); ++i){if(haystack[i] == needle[pos]){if(pos == needle_len -1)return...
Given two stringsneedleandhaystack, return the index of the first occurrence ofneedleinhaystack, or-1ifneedleis not part ofhaystack. 给定两个字符串 needle 和 haystack,返回 needle 在 haystack 中第一次出现的索引,如果 needle 不是 haystack 的一部分,则返回-1。 Input: haystack = "sadbutsad", ne...
- LeetCodeleetcode.com/problems/find-the-index-of-the-first-occurrence-in-a-string/description/ 解题思路 二重循环,没什么特别的 class Solution { public: int strStr(string haystack, string needle) { int index = 0; bool flag = true; for(int i = 0; i < haystack.size(); i++) { ...
Given two stringsneedleandhaystack, return the index of the first occurrence ofneedleinhaystack, or-1ifneedleis not part ofhaystack. implSolution{pubfnstr_str(haystack:String,needle:String)->i32{lethlen=haystack.len();letnlen=needle.len();ifhlen<nlen{return-1;}foriin0..=(hlen-nlen){if&...
The first occurrence is at index 0, so we return 0. Example 2: Input:haystack = "leetcode", needle = "leeto"Output:-1Explanation:"leeto" did not occur in "leetcode", so we return -1. Constraints: 1 <= haystack.length, needle.length <= 104 ...
This code example produces the following results: Find the first occurrence of a character using different values of StringComparison. The current culture is "en-US" - English (United States). Search for the string "Å" in the string "A Cheshire ca°t" Part 1: Start index and count are...
Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. The method returns -1 if the characters in the array are not found in this instance.This member is overloaded. For complete information about this member, ...
String.Searching.cs Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. C# publicintIndexOfAny(char[] anyOf); Parameters anyOf Char[] A Unicode character array containing one or more characters to seek. ...
Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index. 返回这个字符串从指定的下标开始,指定字符在这个字符串中第一次出现的索引。 If a character with value ch occurs in the ...
Returns the zero-based index of the first occurrence of a value within a string or within a portion of it.