Created
February 19, 2019 03:24
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[length of longest sub string]
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| def longest_substring(s): | |
| res, start, n = 0, 0, 0, len(s) | |
| maps = {} | |
| for i in range(n): | |
| start = max(start, maps.get(s[i], -1)+1) | |
| res = max(res, i-start+1) | |
| maps[s[i]] = i | |
| return start, start+res-1, res |
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