15 Jun 2024•Easy•C++ / Python / TypeScript

Find the Index of the First Occurrence in a String

C++, Python and TypeScript solutions for Find the Index of the First Occurrence in a String.

The Find the Index of the First Occurrence in a String solutions are below.

Solution files

Python•find-the-index-of-the-first-occurrence-in-a-string/synced-solution.py

class Solution:
    def strStr(self, haystack: str, needle: str) -> int:
        return haystack.find(needle)

C++•find-the-index-of-the-first-occurrence-in-a-string/synced-solution.cpp

class Solution {
public:
    int strStr(string haystack, string needle) {
        size_t pos = haystack.find(needle);
        return pos == string::npos ? -1 : pos;
    }
};

TypeScript•find-the-index-of-the-first-occurrence-in-a-string/synced-solution.ts

function strStr(haystack: string, needle: string): number {
    return haystack.indexOf(needle);
}