给你一个字符串数组 words ,请你找出所有在 words 的每个字符串中都出现的共用字符( 包括重复字符),并以数组形式返回。你可以按 任意顺序 返回答案。
示例 1:
输入:words = ["bella","label","roller"]
输出:["e","l","l"]
示例 2:
输入:words = ["cool","lock","cook"]
输出:["c","o"]
提示:
1 <= words.length <= 100
1 <= words[i].length <= 100
words[i] 由小写英文字母组成
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/find-common-characters