添加新题目

滑动窗口/无重复字符的最长字串/main.go

@@ -0,0 +1,37 @@
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println(lengthOfLongestSubstring(" "))
+}
+
+func lengthOfLongestSubstring(s string) int {
+	if len(s) == 0 {
+		fmt.Println("直接")
+		return 0
+	}
+	if len(s) == 1 {
+		return 1
+	}
+	left, right := 0, 1
+	window := 1
+	result := 0
+	hash := make(map[rune]struct{}, 0)
+	hash[rune(s[0])] = struct{}{}
+	for right < len(s) {
+		if _, ok := hash[rune(s[right])]; ok {
+			window--
+			delete(hash, rune(s[left]))
+			left++
+
+		} else {
+			hash[rune(s[right])] = struct{}{}
+			right++
+			window++
+			result = max(result, window)
+		}
+
+	}
+	return result
+}