38 lines
582 B
Go
38 lines
582 B
Go
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package main
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import "fmt"
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func main() {
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fmt.Println(lengthOfLongestSubstring(" "))
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}
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func lengthOfLongestSubstring(s string) int {
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if len(s) == 0 {
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fmt.Println("直接")
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return 0
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}
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if len(s) == 1 {
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return 1
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}
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left, right := 0, 1
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window := 1
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result := 0
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hash := make(map[rune]struct{}, 0)
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hash[rune(s[0])] = struct{}{}
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for right < len(s) {
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if _, ok := hash[rune(s[right])]; ok {
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window--
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delete(hash, rune(s[left]))
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left++
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} else {
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hash[rune(s[right])] = struct{}{}
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right++
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window++
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result = max(result, window)
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}
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}
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return result
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}
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