leetcode-14 最长公共前缀

/**
 * @param {string[]} strs
 * @return {string}
 */
var longestCommonPrefix = function (strs) {
  let i = 0;
  while (strs.every((o) => i < o.length && o[i] === strs[0][i])) {
    i++;
  }
  if (i === 0) return "";
  return strs[0].slice(0, i);
};