Java: Display the number rhombus structure
Java Conditional Statement: Exercise-25 with Solution
Write a java program to display the number rhombus structure.
Test Data
Input the number: 7
Pictorial Presentation:

Sample Solution:
Java Code:
import java.util.Scanner;
public class Exercise25 {
public static void main(String args[])
{
Scanner in = new Scanner(System.in);
System.out.print("Input the number: ");
int n = in.nextInt();
int count = 1;
int no_of_spaces = 1;
int start = 0;
for (int i = 1; i < (n * 2); i++)
{
for (int spc = n - no_of_spaces; spc > 0; spc--)
{
System.out.print(" ");
}
if (i < n)
{
start = i; //for number
no_of_spaces++; //for spaces
} else
{
start = n * 2 - i; //for number
no_of_spaces--; //for space
}
for (int j = 0; j < count; j++)
{
System.out.print(start);
if (j < count / 2)
{
start--;
} else
{
start++;
}
}
if (i < n)
{
count = count + 2;
} else {
count = count - 2;
}
System.out.println();
}
}
}
Sample Output:
Input the number: 7 1 212 32123 4321234 543212345 65432123456 7654321234567 65432123456 543212345 4321234 32123 212 1
Flowchart:

Java Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a java program to generate a following @'s triangle.
Next: Write a Java program to display the following character rhombus structure.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Java: Tips of the Day
IsPowerOfTwo
Checks if a value is positive power of two.
To understand how it works let's assume we made a call IsPowerOfTwo(4).
As value is greater than 0, so right side of the && operator will be evaluated.
The result of (~value + 1) is equal to value itself. ~100 + 001 => 011 + 001 => 100. This is equal to value.
The result of (value & value) is value. 100 & 100 => 100.
This will value the expression to true as value is equal to value.
public static boolean isPowerOfTwo(final int value) { return value > 0 && ((value & (~value + 1)) == value); }
Ref: https://bit.ly/3sA5d4I
- Weekly Trends
- Python Interview Questions and Answers: Comprehensive Guide
- Scala Exercises, Practice, Solution
- Kotlin Exercises practice with solution
- MongoDB Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - JOINS
- Java Basic Programming Exercises
- SQL Subqueries
- Adventureworks Database Exercises
- C# Sharp Basic Exercises
- SQL COUNT() with distinct
- JavaScript String Exercises
- JavaScript HTML Form Validation
- Java Collection Exercises
- SQL COUNT() function
- SQL Inner Join
We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook