LeetBook 反转字符串

C#

    static void Main(string[] args)
    {
        string[] s =new string[4] { "a", "b", "c", "d" };

        ReverseString(s);

        Console.ReadLine();
    }

    /// <summary>
    /// 反转字符串数组
    /// </summary>
    /// <param name="s"></param>
    private static void ReverseString(string[] s)
    {
        string firstNumber = string.Empty;
        for (int i = 0; i < s.Length / 2; i++)
        {
            firstNumber = s[i];

            //首尾交换
            s[i] = s[s.Length - 1 - i];
            s[s.Length - 1 - i] = firstNumber;
        }

        for (int i = 0; i < s.Length; i++)
        {
            Console.WriteLine(s[i]);
        }
    }