程序不复杂,直接上代码了:
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 k = 0; k < length -i;k++) Console.Write(" "); for (int j = 0; j < a[i].Length; j++) Console.Write("{0} ", a[i][j]); Console.Write(" "); } Console.Read(); } }
运行效果如下: