打印倒三角
eg:
输入:
6
输出:
1
1 1
1 2 1
1 3 2 1
1 4 3 2 1
1 5 4 3 2 1
import java.util.Scanner;
public class Exercise {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc=new Scanner(System.in);
int size;
System.out.println("请输入要打印的倒三角的行数:");
size=sc.nextInt();
int triangle[][]=new int [size][];
for(int i=0;i<triangle.length;i++){
triangle[i]=new int [i+1];
}
for(int i=0;i<triangle.length;i++){
triangle[i][0]=1;
}
for(int i=0;i<triangle.length;i++){
int num=1;
for(int j=triangle[i].length-1;j>0;j--){
triangle[i][j]=num++;
}
}
for(int[] tri:triangle){
for(int t:tri){
System.out.print(t+" ");
}
System.out.println();
}
}
}