复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace 算法
{
class 全组合算法
{
[Flags]
public enum PersonType
{
Audit = 1,
Child = 2,
Senior = 4
}

public static void Run(string[] args)
{
var lstSource = GetEnumList<PersonType>();
var lstComb = FullCombination(lstSource);
var lstResult = new List<PersonType>();
lstComb.ForEach(item =>
{
lstResult.Add(item.Aggregate((result, source) => result | source));
});
}

public static List<T> GetEnumList<T>()
{
var lst = new List<T>();
foreach (T item in Enum.GetValues(typeof(T)))
{
lst.Add(item);
}
return lst;
}

//全组合算法
public static List<List<T>> FullCombination<T>(List<T> lstSource)
{
var n = lstSource.Count;
var max = 1 << n;
var lstResult = new List<List<T>>();
for (var i = 0; i < max; i++)
{
var lstTemp = new List<T>();
for (var j = 0; j < n; j++)
{
if ((i >> j & 1) > 0)
{
lstTemp.Add(lstSource[j]);
}
}
lstResult.Add(lstTemp);
}
lstResult.RemoveAt(0);
return lstResult;
}

}
}