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给你一个字符串 s 和一个字符串数组 dictionary ，找出并返回 dictionary 中最长的字符串，该字符串可以通过删除 s 中的某些字符得到。

如果答案不止一个，返回长度最长且字母序最小的字符串。如果答案不存在，则返回空字符串。

示例 1：

输入：s = "abpcplea", dictionary = ["ale","apple","monkey","plea"]
输出："apple"

示例 2：

输入：s = "abpcplea", dictionary = ["a","b","c"]
输出："a"

/*** @param {string} s* @param {string[]} dictionary* @return {string}*/
var findLongestWord = function(s, dictionary) {let max = 0,str = ''for(let i = 0;i<dictionary.length;i++){let left = 0,right =0while(left<s.length&&right<dictionary[i].length){if(s[left]==dictionary[i][right]){left++right++}else{left++}}if(right>=dictionary[i].length){if(max<dictionary[i].length||max==dictionary[i].length&&dictionary[i]<str){max = dictionary[i].lengthstr = dictionary[i]}}}return str
};