用JAVA实现杨辉三角实例

 
import java.util.Scanner;
 
public class Tast01 {
public static void main(String[] args) {
	Scanner arr=new Scanner(System .in );
	int n=arr.nextInt();
	for (int i = 0; i < n; i++) {		//行
		for (int j = 0; j <= i; j++) {	//列
			if(j==0) {
				System.out.print(0);		
			}else {
				System.out.print(" "+0);
			}
		}
		System.out.println();			//换行
	}
}
}

 
import java.util.Scanner;
 
public class Tast02 {
	public static void main(String[] args) {
		Scanner arr = new Scanner(System.in);
		int n = arr.nextInt();								   //键盘输入n
		int[][] sc = new int[n][n];
		for (int i = 0; i < sc.length; i++) {
			for (int j = 0; j <= i; j++) {
				if (j == 0 || j == i) { 					   // 第一列全为1
					sc[i][j] = 1;
				} else {
					sc[i][j] = sc[i - 1][j - 1] + sc[i - 1][j];//下一行的数等于“肩上”两数之和。
				}
			}
		}
		for (int i = 0; i < n; i++) {                          // 行
			for (int j = 0; j <= i; j++) {					   // 列
				if (j == 0) {
					System.out.print(sc[i][j]);
				} else {
					System.out.print(" " + sc[i][j]);
				}
			}
			System.out.println(); 								// 换行
		}
 
	}
}