[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 764
  • Last Modified:

java triangle

how is it possible to draw this type of triangle in java:

    *
  **
***
and

***
 **
   *
0
pauledwardian
Asked:
pauledwardian
1 Solution
 
for_yanCommented:
What do you mean by that question?
You cat just print like that:

System.out.println("  *");
System.out.println(" **");
System.out.println("***");

or you can create a panle and draw them and fill them in.

Please, explain what do you mean by this question?

0
 
pauledwardianAuthor Commented:
can you do these two triangles  by for loops please?

thanks,
edward
0
 
Sathish David Kumar NCommented:
put for loop !
and use system.out.print

for each(increment) it will print one *

put if  inside the loop
system.out.println

0
 
rmonsenCommented:
		int trisize = 3;

		// Draw first triangle
		for (int i = 1; i <= trisize; i++) {
			// Spaces infront
			for(int j = 0; j < trisize - i; j++ ) {
				System.out.print(" ");
			}
			// stars
			for(int j = trisize; j > trisize - i; j-- ) {
				System.out.print("*");
			}
			System.out.println();
		}

		// Draw second triangle
		for (int i = trisize; i >= 1; i--) {
			// Spaces infront
			for(int j = 0; j < trisize - i; j++ ) {
				System.out.print(" ");
			}
			// stars
			for(int j = trisize; j > trisize - i; j-- ) {
				System.out.print("*");
			}
			System.out.println();
		}


		// Draw both in one loop
		for (int i = trisize; i >= -trisize; i--) {
			int stars = 1 + trisize - Math.abs(i);
			if (i == 0) continue; // Skip iteration
			
			for(int j = 0; j < trisize - stars; j++ ) {
				System.out.print(" ");
			}
			// stars
			for(int j = trisize; j > trisize - stars; j-- ) {
				System.out.print("*");
			}
			System.out.println();
		}

Open in new window

0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now