I need to write a Java program that prints out the following triangles exactly.

Question

I need to write a Java program that prints out the following triangles exactly.

Here is the parameters of the Java program:

package assignment1;

public class Assignment1 {

    private final int HEIGHT = 11;
  
    public enum Patterns{
        bottomLeftTriangle,
        bottomRightTriangle,
        topLeftTriangle,
        topRightTriangle,
        centerTriangle,
    };
  
    // Write details of your algorithm
    void printCenter(char ch){
      
      
    }
  
    // Write details of your algorithm
    void printBottomLeft(char ch){
      
  
    }
  
    // Write details of your algorithm
    void printTopLeft(char ch){
      
    }
  
    // Write details of your algorithm
    void printBottomRight(char ch){
      
     
    }
  
    // Write details of your algorithm
    void printTopRight(char ch){
      
    }
  
    /*
     * This function according to the pattenId calls the appropriate print function
     * with the input ch. Default printTopLeft is called.
     *
     */
    public void printPattern(Patterns patternId, char ch){
      
        switch (patternId){
            case bottomLeftTriangle:
                this.printBottomLeft(ch);
                break;
            case bottomRightTriangle:
                this.printBottomRight(ch);
                break;
            case topLeftTriangle:
                this.printTopLeft(ch);
                break;
            case topRightTriangle:
                this.printTopRight(ch);
                break;
            case centerTriangle:
                this.printCenter(ch);
                break;
            default:
                this.printTopLeft(ch);
                break;
        }
    }
  
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Assignment1 ass1 = new Assignment1();
        ass1.printPattern(Assignment1.Patterns.bottomLeftTriangle, '*');
        ass1.printPattern(Assignment1.Patterns.bottomRightTriangle, '#');
        ass1.printPattern(Assignment1.Patterns.topLeftTriangle, '@');
        ass1.printPattern(Assignment1.Patterns.topRightTriangle, '%');
        ass1.printPattern(Assignment1.Patterns.centerTriangle, '^');
    }
  
}

Develop a class in Java which produces the following outputs according to the input parameters kx aaaaaa $$$$ kxx % % kx*kxx kx**kx - Your program is going to draw 5 different triangles, (1) left-bottom right triangle, (2) right-bottom right triangle, (3) left-top right triangle, (4) right-top right triangle, (5) isosceles triangle with fixed height -You are going to use the framework ( Assignment 1.java - I Implement the 5 print functions Update access modifiers of these 5 print functions - For the isosceles triangle, since you know the height, first you need to compute the base, and then, start drawing (base -1)/2 (base -3)/2 AXa (base -5)/2 5 height base .

Explanation / Answer

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author Surya
*/
public class Assignment1 {
private final int HEIGHT = 11;
  
public enum Patterns{
bottomLeftTriangle,
bottomRightTriangle,
topLeftTriangle,
topRightTriangle,
centerTriangle,
};
  
// Write details of your algorithm
void printCenter(char ch){
  
int i,j,k=1;
for(i=0;i<HEIGHT;i++)
{
//printing space
for(j=0;j<HEIGHT-i;j++)
{
System.out.print(' ');
}
//printing char
for(j=0;j<k;j++)
{
System.out.print(ch);
}
k=k+2;
System.out.println();
}
  
  
}
  
// Write details of your algorithm
void printBottomLeft(char ch){
  
  
int i,j,k=1;
for(i=0;i<HEIGHT;i++)
{
//printing char
for(j=0;j<k;j++)
{
System.out.print(ch);
}
k=k+1;
System.out.println();
}
  
  
}
  
// Write details of your algorithm
void printTopLeft(char ch){
  
int i,j,k=0;
for(i=0;i<HEIGHT;i++)
{
//printing char
for(j=0;j<HEIGHT-k;j++)
{
System.out.print(ch);
}
k=k+1;
System.out.println();
}
}
  
// Write details of your algorithm
void printBottomRight(char ch){
  
int i,j,k=1;
for(i=0;i<HEIGHT;i++)
{
//printing space
for(j=0;j<HEIGHT-i;j++)
{
System.out.print(' ');
}
//printing char
for(j=0;j<k;j++)
{
System.out.print(ch);
}
k=k+1;
System.out.println();
}
  

  
}
  
// Write details of your algorithm
void printTopRight(char ch){
  
int i,j,k=0;
for(i=0;i<HEIGHT;i++)
{
//printing space
for(j=0;j<i;j++)
{
System.out.print(' ');
}
//printing char
for(j=0;j<HEIGHT-k;j++)
{
System.out.print(ch);
}
k=k+1;
System.out.println();
}
  
  
}
  
/*
* This function according to the pattenId calls the appropriate print function
* with the input ch. Default printTopLeft is called.
*
*/
public void printPattern(Patterns patternId, char ch){
  
switch (patternId){
case bottomLeftTriangle:
this.printBottomLeft(ch);
break;
case bottomRightTriangle:
this.printBottomRight(ch);
break;
case topLeftTriangle:
this.printTopLeft(ch);
break;
case topRightTriangle:
this.printTopRight(ch);
break;
case centerTriangle:
this.printCenter(ch);
break;
default:
this.printTopLeft(ch);
break;
}
}
  
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Assignment1 ass1 = new Assignment1();
ass1.printPattern(Assignment1.Patterns.bottomLeftTriangle, '*');
ass1.printPattern(Assignment1.Patterns.bottomRightTriangle, '#');
ass1.printPattern(Assignment1.Patterns.topLeftTriangle, '@');
ass1.printPattern(Assignment1.Patterns.topRightTriangle, '%');
ass1.printPattern(Assignment1.Patterns.centerTriangle, '^');
}
  
}

output:-

run:
*
**
***
****
*****
******
*******
********
*********
**********
***********
#
##
###
####
#####
######
#######
########
#########
##########
###########
@@@@@@@@@@@
@@@@@@@@@@
@@@@@@@@@
@@@@@@@@
@@@@@@@
@@@@@@
@@@@@
@@@@
@@@
@@
@
%%%%%%%%%%%
%%%%%%%%%%
%%%%%%%%%
%%%%%%%%
%%%%%%%
%%%%%%
%%%%%
%%%%
%%%
%%
%
^
^^^
^^^^^
^^^^^^^
^^^^^^^^^
^^^^^^^^^^^
^^^^^^^^^^^^^
^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^
BUILD SUCCESSFUL (total time: 0 seconds)

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