add sol

leetcode/344.ReverseString/reverseString.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+)
+
+func reverseString(s []byte) {
+	for i, j := 0, len(s)-1; i < j; i++ {
+		s[i], s[j] = s[j], s[i]
+		j--
+	}
+}
+
+func reverseString1(s []byte) {
+	for i := 0; i < len(s)/2; i++ {
+		j := len(s) - i - 1
+		s[i], s[j] = s[j], s[i]
+	}
+}
+
+func reverseString2(s []byte) {
+	i := 0
+	j := len(s) - i - 1
+
+	for i < j {
+		s[i], s[j] = s[j], s[i]
+		i++
+		j--
+	}
+}
+
+func reverseString3(s []byte) {
+	for i, j := 0, len(s)-1; i < j; j = len(s) - i - 1 {
+		s[i], s[j] = s[j], s[i]
+		i++
+		j--
+	}
+}
+
+func reverseString4(s []byte) {
+	b := bytes.Runes(s)
+	for i, j := 0, len(b)-1; i < j; i, j = i+1, j-1 {
+		b[i], b[j] = b[j], b[i]
+	}
+	copy(s, string(b))
+}
+
+func main() {
+	s := []byte{'h', 'e', 'l', 'l', 'o'}
+
+	reverseString3(s)
+
+	fmt.Println(string(s))
+}