Go version : go1.15
[OK] Input:abcdefg	-> Output:gfedcba
[OK] Input:表示機能テスト	-> Output:トステ能機示表
[OK] Input:🙏🙇👉🎁	-> Output:🎁👉🙇🙏
[ng] Input:🙏2️⃣👌👁	-> Output:👁👌⃣️2🙏	Expect:👁👌2️⃣🙏
- Input : []int32{128591, 50, 65039, 8419, 128076, 128065}
- Actual: []int32{128065, 128076, 8419, 65039, 50, 128591}
- Expect: []int32{128065, 128076, 50, 65039, 8419, 128591}