C#超大整数的加减法

最新推荐文章于 2020-05-07 22:11:10 发布

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最新推荐文章于 2020-05-07 22:11:10 发布

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分类专栏： LeetCodeInGame 文章标签： C# 无限位加减法字符串加减

本文链接：https://blog.youkuaiyun.com/osuckseed/article/details/103427549

简单示例，理论支持无限位加减

    if (GUILayout.Button(" string Add"))
        {
           string v= AddOrReduceStrings("3091345589131",
               "3091345589131");
            string j = AddOrReduceStrings("5678931",
              "43229",2);
            Debug.Log(v);
            Debug.Log(j);
        }

具体实现

    /// <summary>
    /// 字符串加减法
    /// </summary>
    /// <param name="num1"></param>
    /// <param name="num2"></param>
    /// <param name="type"> 1 add  2reduce </param>
    /// <returns></returns>
    public static string AddOrReduceStrings(string num1, string num2, int type = 1)
    {
        num1 = num1.TrimStart('0');
        num2 = num2.TrimStart('0');
        if (type == 2)
        {
            //以小减大直接返回0
            if (num2.Length > num1.Length)
            {
                return "0";
            }
            else if (num2