Find the Index of the First Occurrence in a String 在字符串中找到目标字符第一次出现的索引 Kyle 计算机,暂时的神。解决方案 class Solution { public int strStr(String haystack, String needle) { int hayIndex = 0; int neeIndex = 0; boolean ing = false; if (haystack.length()<needle.length(...
(self, haystack: str, needle: str) -> int: needle_len = len(needle) # status transfer function kmp = {0: {needle[0]: 1}} # kmp = {cur_status: {cur_char: next_status}} pre_status = 0 # backward status, init as 0 for status in range(1, needle_len): for l in needle: ...
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. 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 ...
Or you may need to find nth occurrence. In this tutorial, we shall learn to get the index of first occurrence of a string in another string using Java. We shall make use of String.indexOf(String otherString) method, to find the index of first occurrence of string str2 in s...
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 ...
String.IndexOfAny Method Reference Feedback Definition Namespace: System Assembly: System.Runtime.dll Reports the 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 ...
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...
IndexOf(String, Int32, Int32, StringComparison) Reports the zero-based index of the first occurrence of the specified string in the current String object. Parameters specify the starting search position in the current string, the number of characters in the current string to search, and the ...