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推廣網站開發,包含 Laravel 和 Kotlin 後端撰寫、自動化測試、讀書心得等。Taiwan Kotlin User Group 管理員。

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Hi, here's your problem today. This problem was recently asked by Microsoft:

Given a string, find the length of the longest substring without repeating characters.

Here is an example solution in Python language. (Any language is OK to use in an interview, though we'd recommend Python as a generalist language utilized by companies like Google, Facebook, Netflix, Dropbox, Pinterest, Uber, etc.,)

class Solution:
  def lengthOfLongestSubstring(self, s):
    # Fill this in.

print Solution().lengthOfLongestSubstring('abrkaabcdefghijjxxx')
# 10

Can you find a solution in linear time?