code/leetcode/v1/maxpublicex
Longest Common Prefix
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: [“flower”,”flow”,”flight”]
Output: “fl”
Example 2:
Input: [“dog”,”racecar”,”car”]
Output: “”
Explanation: There is no common prefix among the input strings.
Note:
All given inputs are in lowercase letters a-z.
Unsolved
1 | Input: |
1 | class Solution { |
LeetCode Solution
1 | public String longestCommonPrefix(String[] strs) { |
Nice idea to use substring to find out what index is it. If strs
doesn’t have a substring the index can not be 0. All we need to do is cut the prefix
‘s length.
Reference
https://leetcode-cn.com/problems/longest-common-prefix