using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace AlgorithmCollection
{

    public static partial class Algorithms
    {
        public static void Swap<T>(ref T v1, ref T v2)
        {
            T temp = v1;
            v1 = v2;
            v2 = temp;
        }

        public static void Swap<T>(ref IList<T> data, int i1, int i2)
        {
            T temp = data[i1];
            data[i1] = data[i2];
            data[i2] = temp;
        }

        public static void Swap<T>(ref List<T> data, int i1, int i2)
        {
            T temp = data[i1];
            data[i1] = data[i2];
            data[i2] = temp;
        }

        public static void Swap<T>(ref T[] data, int i1, int i2)
        {
            T temp = data[i1];
            data[i1] = data[i2];
            data[i2] = temp;
        }

        // 阶乘
        public static int Factorial(int n)
        {
            if (n == 1)
                return 1;
            return n * Factorial(n - 1);
        }

        public static T Min<T>(T v1, T v2) where T : IComparable
        {
            return v1.CompareTo(v2) < 0 ? v1 : v2;
        }

        public static T Max<T>(T v1, T v2) where T : IComparable
        {
            return v1.CompareTo(v2) > 0 ? v1 : v2;
        }

        public static string ListToString<T>(List<T> data)
        {
            string content = "";
            //data.ForEach((T v) => { content += v.ToString(); });
            for(int i = 0; i < data.Count; ++i)
            {
                content += data[i];
                if (i != data.Count - 1)
                    content += ",";
            }
            return content;
        }

    }

}