Java Conditional Statement Exercises: Display the pattern like a diamond
Java Conditional Statement: Exercise-21 with Solution
Write a program in Java to display the pattern like a diamond.
Test Data
Input number of rows (half of the diamond) :7
Pictorial Presentation:
Sample Solution:
Java Code:
import java.util.Scanner;
public class Exercise21 {
public static void main(String[] args)
{
int i,j,r;
System.out.print("Input number of rows (half of the diamond) : ");
Scanner in = new Scanner(System.in);
r = in.nextInt();
for(i=0;i<=r;i++)
{
for(j=1;j<=r-i;j++)
System.out.print(" ");
for(j=1;j<=2*i-1;j++)
System.out.print("*");
System.out.print("\n");
}
for(i=r-1;i>=1;i--)
{
for(j=1;j<=r-i;j++)
System.out.print(" ");
for(j=1;j<=2*i-1;j++)
System.out.print("*");
System.out.print("\n");
}
}
}
Sample Output:
Input number of rows (half of the diamond) : 7 * *** ***** ******* ********* *********** ************* *********** ********* ******* ***** *** *
Flowchart:
Java Code Editor:
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Next: Write a Java program to display Pascal's triangle.
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Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
Ref: https://bit.ly/32urdSe
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