【Java】杨辉三角形
import java.util.*;public class Main{
public static void main(String[] args) {
Scanner in=new Scanner(System.in);
System.out.println("请输入行数");
int a=in.nextInt();
int num[][] = new int;
for(int m=0;m<a;m++){
for(int n=0;n<=m;n++){
if(n==0||m==n){
num=1;
}
else
num=num+num;
}
}
for(int i=0;i<a;i++){
for(int l=i;l<a;l++){
System.out.print(" ");
}
for(int j=a-i;j<=a;j++){
System.out.print(num+" ");
}
System.out.println();
}
}
}
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