Question

Please solve this in Java.

Assume we have already defined a variable of type int called num with the following line of code:

int num = ???; // 'num' can have any int value

TASK: Print a Triforce composed of 3 centered triangles created with num asterisks (*) on the bottom row, num - 2 asterisks on the next bottom row, ..., and 1 asterisk on the top row, and such that the triangles are surrounded by hyphens (-). You can assume that num is odd and is at least 3.

EXAMPLE: If num is 5, the resulting Triforce would be the following:

-----*-----
----***----
---*****---
--*-----*--
-***---***-
*****-*****

Sample Input:

5

Sample Output:

-----*-----
----***----
---*****---
--*-----*--
-***---***-
*****-*****

Answer 1

import java.util.Scanner;

class Main {
    public static void main(String[] args) {
        int num = 5;
        int cols = 2*num+1;
        for(int i=1;i<=num;i+=2){
            int dash = num-i+1;
            for(int j=0;j<dash;j++){
                System.out.print("-");
            }
            for(int j=0;j<cols-2*dash;j++){
                System.out.print("*");
            }
            for(int j=0;j<dash;j++){
                System.out.print("-");
            }
            System.out.println();
        }
        for(int i=1;i<=num;i+=2){
            int dash = (num-i+1)/2;
            for(int j=0;j<dash;j++){
                System.out.print("-");
            }
            for(int j=0;j<i;j++) {
                System.out.print("*");
            }
            for(int j=0;j<dash;j++){
                System.out.print("-");
            }
            System.out.print("-");
            for(int j=0;j<dash;j++){
                System.out.print("-");
            }
            for(int j=0;j<i;j++) {
                System.out.print("*");
            }
            for(int j=0;j<dash;j++){
                System.out.print("-");
            }
            System.out.println();
        }
    }
}

OUTPUT :

Run: Main x "C:\Program Files\Java \jdk- + → X If X 7 X X