LeetCode: 14. Longest Common Prefix

Problem: 14. Longest Common Prefix

Link: https://leetcode.com/problems/longest-common-prefix/

Difficulty: Easy

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: [“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.

Solution: 

Language: Swift

Runtime: 20ms
Memory: 4.0MB