w3resource

Java: Generate a following @'s triangle

Java Conditional Statement: Exercise-24 with Solution

Write a Java program to generate the following @'s triangle.

Test Data
Input the number: 6

Pictorial Presentation:

Java conditional statement Exercises: Generate a following @'s triangle

Sample Solution:

Java Code:

import java.util.Scanner;
public class Exercise24 {
   public static void main(String args[]) 
    {
        Scanner in = new Scanner(System.in);
        System.out.print("Input the number: ");
        int n = in.nextInt();

        for (int i = 0; i < n; i++) 
        {
            for (int spc = n - i; spc > 0; spc--) 
            {
                System.out.print(" ");
            }
            for (int j = 0; j <= i; j++) 
            {
                System.out.print("@");
            }
            System.out.println();
        }
    }

}

Sample Output:

Input the number: 6                                                                                           
      @                                                                                                       
     @@                                                                                                       
    @@@                                                                                                       
   @@@@                                                                                                       
  @@@@@                                                                                                       
 @@@@@@

Flowchart:

Flowchart: Java Conditional Statement Exercises - Generate a following @'s triangle

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 number rhombus structure.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.

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

 





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