# https://leetcode.com/problems/longest-substring-without-repeating-characters/

import pyutil as pyu
pyu.get_local_pyinfo()

'conda env: ml311; pyv: 3.11.10 (main, Oct  3 2024, 07:29:13) [GCC 11.2.0]'

print(pyu.ps2("scipy"))

scipy==1.14.1

from collections import Counter

class Solution:
  def lengthOfLongestSubstring(self, s: str) -> int:
    ans = 0
    count = Counter()

    l = 0
    for r, c in enumerate(s):
      count[c] += 1
      while count[c] > 1:
        count[s[l]] -= 1
        l += 1
      ans = max(ans, r - l + 1)

    return ans

Solution().lengthOfLongestSubstring("one")

3

Solution().lengthOfLongestSubstring("pwwkew")

3