Example of implementing Yang Hui's triangle in C#

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The implementation of Yang Hui Triangle in C

#Problem description: Create a program to find triangles. The program prompts the user to enter data and then displays the pattern of Yang Hui's triangle.

// Input description: Yang Hui’s triangle length, representing numerical value   #

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace ConsoleApplication2
{
  class Program
  {
    static void Main(string[] args)
    {
      int length = 0;//杨辉三角形的长度 
      Console.Write("输入杨辉三角长度：");


      length = Convert.ToInt32(Console.ReadLine());//指定杨辉三角形的长度
      int[][] a = new int[length][];//二维数组


      for (int i = 0; i < a.Length; i++)
        a[i] = new int[i + 1];//遍历，赋值增量
      for (int j = 0; j < a.Length; j++)
      {
        a[j][0] = 1; //把第1列的元素都赋1
        a[j][j] = 1; //把每1列最右边的元素都赋1
        for (int m = 1; m < a[j].Length - 1; m++)


          a[j][m] = a[j - 1][m - 1] + a[j - 1][m];//其余元素的值由杨辉公式计算
      }
      for (int i = 0; i < a.Length; i++) //遍历数组输出杨辉三角形
      {


        for (int j = 0; j < a[i].Length; j++)
          Console.Write("{0}\t", a[i][j]);
        Console.Write("\n");
      }
      Console.Read();



    }
  }
}

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