How to Print Pyramid Pattern inwards Java? Program Example

Pattern based exercises are a proficient means to larn nested loops inwards Java. There are many designing based exercises as well as i of them is printing Pyramid construction every bit shown below:

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

You postulate to write a Java computer programme to impress higher upward pyramid pattern. How many levels the pyramid triangle would accept volition survive decided yesteryear the user input. You tin impress this form of designing yesteryear using print() as well as println() method from System.out object. System.out.print() merely prints the String or graphic symbol you lot passed to it, without adding a novel line, useful to impress stars inwards the same line. While, System.out.println() impress characters followed yesteryear a newline character, which is useful to motility to side yesteryear side line. You tin likewise use Scanner bird to acquire input from the user as well as describe pyramid upward to that bird only. For event inwards higher upward diagram, the pyramid has v levels.

Analysis

If you lot expect at the occupation as well as thus you lot volition honor that you lot postulate to impress the star (*) graphic symbol inwards the same line every bit good every bit a novel line to generate a pyramidical pattern. You tin likewise run across that * are separated yesteryear space. In programming, to do a line repeatedly e.g. printing star, you lot tin purpose a loop. This form of problem, which require printing inwards row as well as column commonly require 2 loops, i within another. Also, known every bit nested loops. You tin purpose for() loop to do this designing every bit shown below:

 public static void drawPyramidPattern() {         for (int i = 0; i < 5; i++) {             for (int j = 0; j < 5 - i; j++) {                 System.out.print(" ");             }             for (int k = 0; k <= i; k++) {                 System.out.print("* ");             }             System.out.println();         }     }

There are 3 loops nested at 2 level, start is for printing each line as well as inner loops for printing designing inwards each line.

Java Program to Print Pyramid Pattern

Here is our Java computer programme to describe the pyramid designing every bit shown inwards the occupation statement. In this program, nosotros accept 2 examples of printing pyramid, inwards start nosotros accept printed pyramid of star character, while, inwards the bit example, nosotros accept drawn a pyramid of numbers. The cardinal hither is to purpose both print() as well as println() method from PrintStream class, which is likewise easily accessible every bit System.out object. We accept likewise used nested for loop to describe the pyramid which you lot volition often purpose to solve this form of problem.

Pattern based exercises are a proficient means to larn nested loops inwards Java How to Print Pyramid Pattern inwards Java? Program Example

Sample code inwards Java to Print the Pyramid Pattern

import java.util.Scanner;  /**  * Simple Java Program to describe a pyramid pattern. We accept used both  * System.out.println() as well as System.out.print() methods to describe stars(*)  * inwards pyramid shape.  *   * @author WINDOWS 8  *  */ public class PrintPyramidTest {      public static void main(String args[]) {         System.out.println("Pyramid designing of star inwards Java : ");         drawPyramidPattern();                  System.out.println("Pyramid of numbers inwards Java : ");         drawPyramidOfNumbers();     }      /**      * This method draws a pyramid designing using asterisk character. You tin      * supersede the asterisk alongside whatever other graphic symbol to describe a pyramid of that.      */     public static void drawPyramidPattern() {         for (int i = 0; i < 5; i++) {             for (int j = 0; j < 5 - i; j++) {                 System.out.print(" ");             }             for (int k = 0; k <= i; k++) {                 System.out.print("* ");             }             System.out.println();         }     }               /**      * This method draws a pyramid of numbers.       */     public static void drawPyramidOfNumbers() {         for (int i = 0; i < 5; i++) {             for (int j = 0; j < 5 - i; j++) {                 System.out.print(" ");             }             for (int k = 0; k <= i; k++) {                 System.out.print(k + " ");             }             System.out.println();         }     } }  Output : Pyramid designing of star inwards Java :       *      * *     * * *    * * * *   * * * * *  Pyramid of numbers inwards Java :       0      0 1     0 1 2    0 1 2 3   0 1 2 3 4

That's all about how to impress Pyramid using Java pattern. You tin honor many designing printing exercises inwards Java or C++ programming books. You tin farther refine this computer programme to impress whatever other graphic symbol instead of * or you lot tin enquire the user to operate inwards set out or rows. You tin fifty-fifty alteration this computer programme to impress pyramid of numbers.

Further Reading
Cracking the Coding Interview: 150 Programming Questions
Coding Puzzles: Thinking inwards code