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难度简单

编写一个函数来查找字符串数组中的最长公共前缀。

如果不存在公共前缀,返回空字符串 ""

示例 1:

输入:strs = ["flower","flow","flight"]
输出:"fl"

示例 2:

输入:strs = ["dog","racecar","car"]
输出:""
解释:输入不存在公共前缀。

提示:

  • 0 <= strs.length <= 200
  • 0 <= strs[i].length <= 200
  • strs[i] 仅由小写英文字母组成