Wrong test case?

  • 0

    here is my code:

    class Solution:
        # @param {string} s
        # @return {integer}
        def lengthOfLongestSubstring(self, s):
            self.s = s
            k = []
            for i in range(len(s)):
                if s[i] not in k:
            f = len(k)

    the system uses "pwwkew" as an input, the output should be 4, you can count it manually, but the system indicates:
    output: 4, expected: 3.

    Can anyone tell me what's wrong?

  • 0

    I had the same question at first.
    Actually the question is asking the length of longest substring, not the number of char.

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