题解 | #圣诞树#
圣诞树
http://www.nowcoder.com/practice/9a03096ed8ab449e9b10b0466de29eb2
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int e = 3*n-1;
for(int i=0;i<n;i++){
for(int k=0;k<e;k++){
System.out.print(" ");
}
for(int j=0;j<i+1;j++){
System.out.print("*");
System.out.print(" ");
}
System.out.println();
e -=1;
for(int k=0;k<e;k++){
System.out.print(" ");
}
for(int j=0;j<i+1;j++){
System.out.print("* *");
System.out.print(" ");
}
System.out.println();
e -=1;
for(int k=0;k<e;k++){
System.out.print(" ");
}
for(int j=0;j<i+1;j++){
System.out.print("* * *");
System.out.print(" ");
}
System.out.println();
e -=1;
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=3*n-1;j++)
{
System.out.print(" ");
}
System.out.println("*");
}
}
}
