344 ut pass

Author: aQua

Algorithms/0344.reverse-string/README.md

@@ -0,0 +1,12 @@
+# [344. Reverse String](https://leetcode.com/problems/reverse-string/)
+
+## 题目
+
+Write a function that takes a string as input and returns the string reversed.
+
+Example:
+Given s = "hello", return "olleh".
+
+## 解题思路
+
+见程序注释

Algorithms/0344.reverse-string/reverse-string.go

@@ -0,0 +1,13 @@
+package Problem0344
+
+func reverseString(s string) string {
+	bytes := []byte(s)
+	size := len(s)
+	res := make([]byte, size)
+
+	for i := range bytes {
+		res[i] = bytes[size-i-1]
+	}
+
+	return string(res)
+}

Algorithms/0344.reverse-string/reverse-string_test.go

@@ -0,0 +1,37 @@
+package Problem0344
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// tcs is testcase slice
+var tcs = []struct {
+	s   string
+	ans string
+}{
+
+	{"hello", "olleh"},
+	{"world", "dlrow"},
+
+	// 可以有多个 testcase
+}
+
+func Test_reverseString(t *testing.T) {
+	ast := assert.New(t)
+
+	for _, tc := range tcs {
+		fmt.Printf("~~%v~~\n", tc)
+		ast.Equal(tc.ans, reverseString(tc.s), "输入:%v", tc)
+	}
+}
+
+func Benchmark_reverseString(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		for _, tc := range tcs {
+			reverseString(tc.s)
+		}
+	}
+}