Can you solve this real interview question? Find the Index of the First Occurrence in a String - Given two strings needle and haystack, return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. Example 1: Input: haystack = "sadbutsad", needle = "sad" Output: 0 Explanation: "sad" occurs at index 0 and 6. The first occurrence is at index 0, so we return 0. Example 2: Input: haystack = "leetcode", needle = "leeto" Output: -1 Explanation: "leeto" did not occur in "leetcode", so we return -1. Constraints: * 1

February 1, 2024 - In this walkthrough, we delve into the problem of finding the index of the first occurrence of a substring in a given string as listed on…

In-depth solution and explanation for LeetCode 28. Find the Index of the First Occurrence in a String in Python, Java, C++ and more. Intuitions, example walk through, and complexity analysis. Better than official and forum solutions.

Input: haystack = "leetcode", needle = "leeto" Output: -1 Explanation: "leeto" did not occur in "leetcode", so we return -1.

August 4, 2025 - Input: haystack = "leetcode", needle = "leeto" Output: -1 *Explanation: *"leeto" did not occur in "leetcode", so we return -1.

LeetCode Solutions in C++23, Java, Python, MySQL, and TypeScript.

July 13, 2017 - Note: the runtime looks okay just because leetcode’s unit test cases are simple.

August 29, 2024 - Input: haystack = "leetcode", needle = "leeto" Output: -1 Explanation: "leeto" did not occur in "leetcode", so we return -1.

December 26, 2024 - Input: haystack = "leetcode", needle = "leeto" Output: -1 Explanation: "leeto" is not part of "leetcode".

August 2, 2022 - LeetCode: 28. Implement strStr() (Solution with images) Link: → https://leetcode.com/problems/implement-strstr/ Problem: → Implement strStr(). Given two strings needle and haystack, return the …

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Can you solve this real interview question? Minimum Insertion Steps to Make a String Palindrome - Given a string s. In one step you can insert any character at any index of the string. Return the minimum number of steps to make s palindrome.

December 14, 2020 - Hello fellow devs 👋! We have a new LeetCode problem today involving string. Implement StrStr Problem Statement Return the index of the first occurrence of in , or -1 if is not part of . Clarification: What should we return when is an empty string? This is a great question to…

Can you solve this real interview question? Maximum XOR of Two Numbers in an Array - Given an integer array nums, return the maximum result of nums[i] XOR nums[j], where 0

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Longest Palindromic Subsequence - Given a string s, find the longest palindromic subsequence's length in s. A subsequence is a sequence that can be derived from another sequence by deleting some or no elements without changing the order of the ...

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How do you solve LeetCode 28: Find the Index of the First Occurrence in a String in Python? Given haystack = "sadbutsad" and needle = "sad", you need to find the first position where "sad" appears—here, index 0. If needle = "leeto" and haystack = "leetcode", return -1 since "leeto" isn’t present.