Atif Shah Atif Shah - 3 months ago 94
Java Question

Creating a Christmas Tree using for loops

I am trying to make a christmas tree using for loops and nested for loops. For me to do that I need to be able to make a pyramids with *. I have tried countless times and I am having problems making one. Here is my code:

for(int i=1;i<=10;i++){
for(int j=10;j>i;j--){
System.out.println(" ");
}

for(int k=1;k<=i;k++){
System.out.print("*");
}

for(int l=10;l<=1;l++){
for(int h=1;h<=10;h++){
System.out.print(" ");
}
}

System.out.println();
}


What I am trying to do is:

*
***
*****
*******

Answer

Try this much simpler code:

public class ChristmasTree {

 public static void main(String[] args) {

  for (int i = 0; i < 10; i++) {
   for (int j = 0; j < 10 - i; j++)
    System.out.print(" ");
   for (int k = 0; k < (2 * i + 1); k++)
    System.out.print("*");
   System.out.println();
  }
 }
}

It uses 3 loops:

  • first one for the number of rows,
  • second one for printing the spaces,
  • third one for printing the asterisks.
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