1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5
6 namespace LambdaSample
7 {
8 class Program
9 {
10 static void Main(string[] args)
11 {
12 int[] myIntArray = { 1,2, 3, 4, 5 };
13 //累加器计算数组总和
14 int result = myIntArray.Aggregate((paramA, paramB) => paramA + paramB);
15 int result1 = myIntArray.Aggregate<int>((paramA, paramB) => paramA + paramB);
16 int result2 = myIntArray.Aggregate<int, int>(0, (paramA, paramB) => paramA + paramB);
17 //递归计算数组总和
18 int result3 = count(5);
19 Console.WriteLine("The Result is: " + result);
20 Console.WriteLine("The Result1 is: " + result1);
21 Console.WriteLine("The Result2 is: " + result2);
22 Console.WriteLine("The Result3 is: " + result3);
23
24 string[] myStrArray = { "Admin", "Change", "ByPage" };
25 //字符串数组拼接 何问起
26 string strResult = myStrArray.Aggregate((paramA, paramB) => paramA + " " + paramB);
27 //字符串数组字符串总长度计算
28 int result4 = myStrArray.Aggregate<string, int>(0, (a, b) => a + b.Length);
29 //字符串数组拼接2，增加字符串"Some curries: "
30 string strResult1 = myStrArray.Aggregate<string, string>("Some curries: ", (a, b) => a + " " + b);
31 //字符串数组字符串总长度计算2 hovertree.com
32 int result5 = myStrArray.Aggregate<string, string, int>("Some curries: ", (a, b) => a + " " + b, a => a.Length);
33 Console.WriteLine("The StrResult is: " + strResult);
34 Console.WriteLine("The Result4 is: " + result4);
35 Console.WriteLine(strResult1);
36 Console.WriteLine("The Result5 is: " + result5);
37 Console.ReadKey();
38 }
39
40 static int count(int n)
41 {
42 if (n == 1)
43 {
44 return 1;
45 }
46 return n + count(n - 1);
47 }
48 }
49 }
转自：http://hovertree.com/h/bjaf/jf9yeju1.htm