JAVA Program for Rhombus Star Pattern

May 9, 2020

Printing Rhombus Star Pattern

In this JAVA program we will be coding a rhombus star pattern which will have n number of stars in it rows and n of stars in column hence it will be a n x n rhombus star pattern  
Print Rhombus Star Pattern

Printing Pattern

In this JAVA program we will be coding a rhombus star pattern which will have n number of stars in it rows and n of stars in column hence it will be a n x n rhombus star pattern

Prerequisite:

Basic knowledge of Java language and loops

Algorithm:

  • Take the number of rows as input from the user and store it in any variable.(‘row‘ in this case).
  • Take the number of coloum as input from the user and store it in any variable.(‘col‘ in this case).
  • Run a loop ‘row’ number of times to iterate through each of the rows. From i=1 to i<=row. The loop should be structured as for                                     (int i=1; i<= row; i++)
  •  Run a nested loop inside the main loop to print the spaces before the rhombus. From j=1 to j<=i. The loop should be structured as for( j=1; j<=i ; j++).
  • Run another nested loop inside the main loop after the previous loop to print the stars in each column of a row. From j=1 to j<=col. The loop should be structured as for( j=1 ; j<=col ; j++).
  • Move to the next line by printing a new line . System.out.print(“*”);
  • After that take System.out.println(); at the end of main for loop

Code in Java:

import java.util.Scanner;
public class Pattern1 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("Enter row and col");
		int row = sc.nextInt();
		int col = sc.nextInt();
		
		for (int i=1; i<= row; i++) {
			for (int j=1 ; j<=i ; j++)  // this loop is for printing spaces
				System.out.print(" ");
			for (int j=1 ; j<=col; j++) // this loop is for printing stars
				System.out.print("*");
			System.out.println();
		}

	}

}

This code is contributed by Shubham Nigam (Prepinsta Placement Cell Student)

4 comments on “JAVA Program for Rhombus Star Pattern”


  • HIMANSHU PATRA

    import java.util.Scanner;

    public class onehundredquestions {
    public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    for (int i = 1; i<=n; i++){
    for (int j = 1; j<i; j++){
    System.out.print(" ");
    }
    for (int j = 1; j<=n; j++){
    System.out.print("*");
    }
    System.out.println();
    }
    }
    }

    0

  • Saloni

    public class MyClass {
    public static void main(String args[]) {
    int n=4;
    for(int i=0;i<n;i++){
    for(int j=0;j<n+i;j++){
    if(j<i)
    System.out.print(" ");
    else
    System.out.print("*");
    }
    System.out.println();
    }

    }
    }

    0

  • Subhajit

    public static void main(String[] args) {
    System.out.println(“Enter Row and Column”);
    Scanner scan=new Scanner(System.in);
    int r=scan.nextInt();
    int c=r*2+1;
    for(int i=0;i<r;i++)
    {
    for(int j=0;j<c;j++)
    {
    if(i<=j&&j<=(c/2)+i)
    {
    System.out.print("*");
    }
    else
    {
    System.out.print(" ");
    }
    }

    System.out.println();
    }

    }

    4