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...
题目信息 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 = "sadbut...
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 haystackandneedleconsist of only lowercas...
LeetCode28. Find the Index of the First Occurrence in a String CacheL1ne 来自专栏 · Leetcode刷题笔记 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+...
Write a Python program to find the first repeated character in a given string where the index of the first occurrence is smallest.Visual Presentation:Sample Solution:Python Code:# Define a function that finds the first repeated character in a string with the smallest distance between the ...
❮ String Methods ExampleGet your own Python Server Where in the text is the word "welcome"?: txt ="Hello, welcome to my world." x = txt.index("welcome") print(x) Try it Yourself » Definition and Usage Theindex()method finds the first occurrence of the specified value. ...
first occurrence of the duplicated value.stringsearchString ="the";intindex = Array.IndexOf(strings, searchString); Console.WriteLine("The first occurrence of \"{0}\" is at index {1}.", searchString, index);// Search for the first occurrence of the duplicated value in the last section ...
TheindexOf()method can also be used to search for a single character in a string. Let's search for the first occurrence of the character 'a' in a string. conststr="JavaScript is a programming language.";constindex=str.indexOf('a');console.log(index);// Output: 1 ...
An instance of the Text data type. Values Type: Text The collection of characters to seek. [Optional] StartIndex Type: Integer The one-based search starting position. Return Value Index Type: Integer The one-based index of the first occurrence of th...