Why I got a wrong answer?


  • 0
    Z

    the input is ["abc","abcc","abc","abca","abca"]
    the leetcode said my output is "ab"
    but i tested my code in xcode, the output actually is "abc"
    Why I got a wrong answer in leetcode?

    class Solution {
        func longestCommonPrefix(_ strs: [String]) -> String {
            if(strs == []){
                return ""
            }
            var commonPre = strs[0]
            for i in 1..<strs.count{
                commonPre = strs[i].commonPrefix(with: commonPre)
            }
            return commonPre
        }
    }

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