List<>的操作

 1             List<string> l1 = "1,2,3,4,5,6,7,8,9,0".Split(',').ToList();
 2             List<string> l2 = "1,2,3,4,5,6,a,b,c,d,e".Split(',').ToList();
 3             List<string> l3 = "1,2,3".Split(',').ToList();
 4             List<string> l4= "1,2,3".Split(',').ToList();
 5             List<string> l5 = "111,111,2222,3333,4444,5555,6666,6,2,1,54".Split(',').ToList();
 6             //交集 123456
 7             List<string> bing = l1.Intersect(l2).ToList();
 8             //并集(不排除重复元素) 1234567890123456abcde
 9             List<string> bingNoDistinct = l1.Concat(l2).ToList();
10 
11             //并集（排除重复元素） 1234567890abcde
12             List<string> bingDistinct = l1.Union(l2).ToList();
13 
14             //及格去重
15             List<string> list = l5.Distinct().ToList();
16 
17             //所有的元素是否全部满足条件 l2集合中是否全部包含l1中的元素
18             bool a = l1.All(x => l2.Contains(x));
19 
20             //集合中是否有满足某些条件的元素 l1集合中是否包含“1”
21             bool b = l1.Any(x=>x=="1");
22 
23             //集合1是否完整包含集合2  l1是否完整包含l3
24             bool c = l3.All(x => l1.Any(y => x.Equals(y))) ;
25             bool d = l3.All(x => l1.Any(y => x==y));
26             bool i = l3.All(x => l1.Contains(x));
27 
28             //两个集合是否相等 l4是否包含l3,并且两个count相等
29             bool f = l3.All(x => l4.Contains(x)) && l3.Count == l4.Count;
30 
31             //根据条件返回集合
32             List<string> listCondition = l5.Where(x => x.Length == 2).ToList();

将一个list集合分为等额的子集合

 /// <summary>
        /// 将一个集合分为多个集合
        /// </summary>
        /// <typeparam name="T">类</typeparam>
        /// <param name="tList">大集合</param>
        /// <param name="perInt">每一个集合的个数</param>
        /// <returns></returns>
        private static List<List<T>> SeperateList<T>(List<T> tList,int perInt)
        {
            List<List<T>> llist = new List<List<T>>();
            int j = perInt;
            for (int i = 0; i < tList.Count; i += perInt)
            {
                List<T> cList = new List<T>();
                cList = tList.Take(j).Skip(i).ToList();
                j += perInt;
                llist.Add(cList);
            }
            return llist;
        }