class Demo{ public static void main(String args[]){ try{ int k = Integer.parseInt(args[0]); fun( k ); }catch(Exception e){ System.out.println("请输入整数"); } }
public static void fun(int n){ if(n <= 0){ System.out.println("不能输出0行或者负数行"); } for(int i = 1; i <= n; i++){//控制输出的行数 for(int y = 0; y < n - i; y++ ){ System.out.print(" "); } for(int j = 1; j <= i; j++){ System.out.print(j + " "); } for(int x = i -1; x > 0; x--){ System.out.print(x + " " ); } System.out.println(); } } }
public static void main(String args[]){
try{
int k = Integer.parseInt(args[0]);
fun( k );
}catch(Exception e){
System.out.println("请输入整数");
}
}
public static void fun(int n){
if(n <= 0){
System.out.println("不能输出0行或者负数行");
}
for(int i = 1; i <= n; i++){//控制输出的行数
for(int y = 0; y < n - i; y++ ){
System.out.print(" ");
}
for(int j = 1; j <= i; j++){
System.out.print(j + " ");
}
for(int x = i -1; x > 0; x--){
System.out.print(x + " " );
}
System.out.println();
}
}
}