14.longest-common-prefix.js

/*
 * @lc app=leetcode id=14 lang=javascript
 *
 * [14] Longest Common Prefix
 */
/**
 * @param {string[]} strs
 * @return {string}
 */
let longestCommonPrefix = function (strs) {
    if (strs == null || strs.length == 0) return "";
    let same = strs[0];
    for (let i = 1; i < strs.length; i++) {
        let str = strs[i];
        let j = 0
        for (; j < same.length; j++) {
            if (same[j] != str.charAt(j)) {
                break;
            }
        }
        same = same.slice(0, j);
    }
    return same;
};