Java Program to Print Right Angled Triangle with Row wise Decreasing Number Pattern

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Print Right Angled Triangle with Row wise Decreasing Number Pattern

In the previous article, we have discussed Java Program to Print Right Angled Triangle with Column Wise Increasing Number Pattern

In this article we will see how to print right angled triangle with row wise decreasing number pattern.

Example-1

When size value=5

5
4 5
3 4 5
2 3 4 5
1 2 3 4 5
Example-2:

When size value=4

4 
3 4 
2 3 4 
1 2 3 4

Now, let’s see the actual program to print it.

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Approach:

  • Enter total size and number store them in integer variables size.
  • Take one outer for loop to iterate the rows.
  • Take one inner for loop to iterate the columns.
  • After each iteration print a newline.

Java Code to Print Right Angled Triangle with Row wise Decreasing Number Pattern

import java.util.Scanner;
class Main
{
    public static void main(String[] args)
    {
        // taking size of no. of iteration 
        //Row and column are the iterators
        int size , numberOfRows , numberOfColumns;
        // Create a new Scanner object
        Scanner scanner = new Scanner(System.in);
        // Get the number of rows from the user
        System.out.println("Enter the number of rows : ");
       size = scanner.nextInt();
        //Outer loop to iterate the rows
        //Iterates from size to 1 
        for ( numberOfRows = size; numberOfRows >=1 ; numberOfRows--) 
        {
            //Inner loop to iterate the columns
         //Iterates from  row value  to size 
            for (  numberOfColumns = numberOfRows; numberOfColumns <= size ; numberOfColumns++)
            { 
                System.out.print(numberOfColumns + " ");
            }
            // printing in new line  
            System.out.println();
        }
    }
} 

Output :

Enter the number of rows : 5

5
4 5
3 4 5
2 3 4 5
1 2 3 4 5

C Code to Print Right Angled Triangle with Row wise Decreasing Number Pattern

#include <stdio.h>
#include <stdlib.h>
int main()
{
       int size , numberOfRows , numberOfColumns;
       printf("Enter the number of rows : ");
       scanf ("%d",&size);
        for ( numberOfRows = size; numberOfRows >=1 ; numberOfRows--) 
        {
            for (  numberOfColumns = numberOfRows; numberOfColumns <= size ; numberOfColumns++)
            { 
                printf("%d ",numberOfColumns);
            }
            printf("\n");
        }
    return 0;
}


Output :

Enter the number of rows : 5

5
4 5
3 4 5
2 3 4 5
1 2 3 4 5

C++ Code to Print Right Angled Triangle with Row wise Decreasing Number Pattern

#include <bits/stdc++.h>
using namespace std;
int main()
{
    
       int size , numberOfRows , numberOfColumns;
       printf("Enter the number of rows : ");
       scanf ("%d",&size);
        for ( numberOfRows = size; numberOfRows >=1 ; numberOfRows--) 
        {
            for (  numberOfColumns = numberOfRows; numberOfColumns <= size ; numberOfColumns++)
            { 
                cout << numberOfColumns ;
            }
            cout<< "\n";
        }
    return 0;
}

Output :

Enter the number of rows : 5

5
4 5
3 4 5
2 3 4 5
1 2 3 4 5

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