集合的並集是合併集合的項,如下圖所示:
List<int> ls1 = new List<int>() { 1,2,3,5,7,9 }; List<int> ls2 = new List<int>() { 2,4,6,8,9,10}; IEnumerable<int> unionLs = ls1.Union(ls2);foreach (int item in unionLs) { Console.Write("{0}\t", item); }
集合的交集是取集合的共同的項,如下圖所示:
List<int> ls1 = new List<int>() { 1,2,3,5,7,9 }; List<int> ls2 = new List<int>() { 2,4,6,8,9,10}; IEnumerable<int> intersectLs = ls1.Intersect(ls2);foreach (int item in intersectLs) { Console.Write("{0}\t",item); }
集合的差集合是取在該集合中而不在另一集合中的所有的項,如下圖所示:
List<int> ls1 = new List<int>() { 1,2,3,5,7,9 }; List<int> ls2 = new List<int>() { 2,4,6,8,9,10}; IEnumerable<int> exceptLs = ls1.Except(ls2);foreach (int item in exceptLs) { Console.Write("{0}\t", item); }
以上是C#中關於List