using System;
using System.Collections.Generic;

namespace ET.Server;

/// <summary>
/// 麻将相关工具类
/// </summary>
public static class CardHelper
{
    /// <summary>
    /// 删除数组中的元素
    /// </summary>
    /// <param name="target">数据源</param>
    /// <param name="v">删除的元素</param>
    /// <returns>新的数据源</returns>
    public static int[] Remove(int[] target, int v)
    {
        int len = target.Length;
        if (len == 0)
        {
            return target;
        }

        // 直接查找要删除的元素
        for (int i = 0; i < len; i++)
        {
            if (target[i] == v)
            {
                int[] dest = new int[len - 1];
                if (i > 0)
                {
                    Array.Copy(target, 0, dest, 0, i);
                }
                if (i != len - 1)
                {
                    Array.Copy(target, i + 1, dest, i, len - i - 1);
                }
                return dest;
            }
        }
        // 如果未找到元素，返回原数组
        return target;
    }
    
    /// <summary>
    /// 向数组添加元素
    /// </summary>
    /// <param name="src">数据源</param>
    /// <param name="v">增加的元素</param>
    /// <returns>新的数据源</returns>
    public static int[] Add(int[] src, int v) {
        List<int> list = new List<int>(src);
        list.Add(v);
        return list.ToArray();
    }

}