28.implement-str-str.js

/*
 * @lc app=leetcode id=28 lang=javascript
 *
 * [28] Implement strStr()
 */
/**
 * @param {string} haystack
 * @param {string} needle
 * @return {number}
 */
let strStr = function(haystack, needle) {
    return haystack.indexOf(needle);
};