Leetcode:Longest Substring Without Repeating Characters
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这题目比较简单,遍历整个s,比较是否重复即可。
class Solution(object): def lengthOfLongestSubstring(self, s): sub,t = set(),[] i,n,longest,L = 0,len(s),0,0 offset = 0 while i<n: ch = s[i] if ch not in sub: sub.add(ch) t.append(ch) i,L=i+1,L+1 if L-offset>longest:longest = L-offset else: x,offset = t[offset],offset+1 sub.remove(x) return longest 0 0
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