力扣748. 最短补全词

力扣748. Shortest Completing Word（最短补全词）

找到最短的补全词。

示例 1：

输入：licensePlate = "1s3 PSt", words = ["step","steps","stripe","stepple"]
输出："steps"
解释：...

提示：

• 1 <= licensePlate.length <= 7
• licensePlate 由数字、空格和大小写字母组成
• 1 <= words.length <= 1000
• 1 <= words[i].length <= 15