#14

Longest Common Prefix

easy · verified · 47.2% accepted · 21,133 likes · top 32%

array · string · trie

⊣ practice⊣ quiz⊣ open on leetcode ↗

Description

Write a function to find the longest common prefix string amongst an array of strings.

If there is no common prefix, return an empty string "".

Example 1:

Input: strs = ["flower","flow","flight"]
Output: "fl"

Example 2:

Input: strs = ["dog","racecar","car"]
Output: ""
Explanation: There is no common prefix among the input strings.

Solution