Python Program to Print Inverted Right Triangle of Numbers

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Given the number of rows of the Triangle, the task is to Print an Inverted Right Triangle of Numbers in C, C++, and Python

Examples:

Example1:

Input:

given number of rows of the Inverted Right Triangle Pattern =13

Output:

13 13 13 13 13 13 13 13 13 13 13 13 13 
12 12 12 12 12 12 12 12 12 12 12 12 
11 11 11 11 11 11 11 11 11 11 11 
10 10 10 10 10 10 10 10 10 10 
9 9 9 9 9 9 9 9 9 
8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

Example2:

Input:

given number of rows of the Inverted Right Triangle Pattern =8

Output:

8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

Program to Print an Inverted Right Triangle of Numbers in C, C++, and Python

Below are the ways to Print an Inverted Right Triangle of Numbers in C, C++, and Python.

Method #1: Using For Loop (Static Input)

Approach:

  • Give the number of rows of the Inverted Right Triangle as static input and store it in a variable.
  • Loop from the given number of rows to 0 using For loop and take iterator value as m.
  • Loop till the iterator value of the first loop using another nested For loop.
  • Print the First Loop iterator value that is m and space character.
  • Print the newline character after inner for loop.
  • The Exit of the Program.

1) Python Implementation

Below is the implementation:

# Give the number of rows of the Inverted Right Triangle as static input and store it in a variable.
triNumRows = 13
# Loop from the given number of rows to 0 using For loop and take iterator value as m.
for m in range(triNumRows, -1, -1):
    # Loop till the iterator value of the first loop using another nested For loop.
    for n in range(m):
        # Print the First Loop iterator value that is m and space character.
        print(m, end=' ')
    # Print the newline character after inner for loop.
    print()

Output:

13 13 13 13 13 13 13 13 13 13 13 13 13 
12 12 12 12 12 12 12 12 12 12 12 12 
11 11 11 11 11 11 11 11 11 11 11 
10 10 10 10 10 10 10 10 10 10 
9 9 9 9 9 9 9 9 9 
8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

2) C++ Implementation

Below is the implementation:

#include <iostream>
using namespace std;

int main()
{

    // Give the number of rows of the Inverted Right
    // Triangle as static input and store it in a variable.
    int triNumRows = 8;
    // Loop from the given number of rows to 0 using For
    // loop and take iterator value as m.
    for (int m = triNumRows; m >= 0; m--) {

        // Loop till the iterator value of the first loop
        // using another nested For loop.
        for (int n = 0; n < m; n++) {
            // Print the First Loop iterator value that is m
            // and space character.
            cout << m << " ";
        }
        // Print the newline character after inner for loop.
        cout << endl;
    }

    return 0;
}

Output:

8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

3) C Implementation

Below is the implementation:

#include <stdio.h>

int main()
{

    // Give the number of rows of the Inverted Right
    // Triangle as static input and store it in a variable.
    int triNumRows = 8;
    // Loop from the given number of rows to 0 using For
    // loop and take iterator value as m.
    for (int m = triNumRows; m >= 0; m--) {

        // Loop till the iterator value of the first loop
        // using another nested For loop.
        for (int n = 0; n < m; n++) {
            // Print the First Loop iterator value that is m
            // and space character.
            printf("%d ", m);
        }
        // Print the newline character after inner for loop.
        printf("\n");
    }
    return 0;
}

Output:

8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

Method #2: Using For Loop (User Input)

Approach:

  • Give the number of rows of the Inverted Right Triangle as user input and store it in a variable.
  • Loop from the given number of rows to 0 using For loop and take iterator value as m.
  • Loop till the iterator value of the first loop using another nested For loop.
  • Print the First Loop iterator value that is m and space character.
  • Print the newline character after inner for loop.
  • The Exit of the Program.

1) Python Implementation

Give the number of rows of the Inverted Right Triangle as user input using int(input()) and store it in a variable.

Below is the implementation:

# Give the number of rows of the Inverted Right Triangle as user input using int(input()) and store it in a variable.
triNumRows = int(input(
    'Enter some random number of rows of the Inverted Right Triangle Pattern = '))
# Loop from the given number of rows to 0 using For loop and take iterator value as m.
for m in range(triNumRows, -1, -1):
    # Loop till the iterator value of the first loop using another nested For loop.
    for n in range(m):
        # Print the First Loop iterator value that is m and space character.
        print(m, end=' ')
    # Print the newline character after inner for loop.
    print()

Output:

Enter some random number of rows of the Inverted Right Triangle Pattern = 7
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

2) C++ Implementation

Give the number of rows of the Inverted Right Triangle as user input using cin and store it in a variable.

Below is the implementation:

#include <iostream>
using namespace std;

int main()
{

    // Give the number of rows of the Inverted Right
    // Triangle as user input using cin and store it in a
    // variable.
    int triNumRows;
    cout << "Enter some random number of rows of the "
            "Inverted Right Triangle Pattern = "
         << endl;
    cin >> triNumRows;
    // Loop from the given number of rows to 0 using For
    // loop and take iterator value as m.
    for (int m = triNumRows; m >= 0; m--) {

        // Loop till the iterator value of the first loop
        // using another nested For loop.
        for (int n = 0; n < m; n++) {
            // Print the First Loop iterator value that is m
            // and space character.
            cout << m << " ";
        }
        // Print the newline character after inner for loop.
        cout << endl;
    }

    return 0;
}

Output:

Enter some random number of rows of the Inverted Right Triangle Pattern = 
6
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

3) C Implementation

Give the number of rows of the Inverted Right Triangle as user input using scanf and store it in a variable.

Below is the implementation:

#include <stdio.h>

int main()
{

    // Give the number of rows of the Inverted Right
    // Triangle as user input using scanf and store it in a
    // variable.
    int triNumRows;
    scanf("%d", &triNumRows);
    // Loop from the given number of rows to 0 using For
    // loop and take iterator value as m.
    for (int m = triNumRows; m >= 0; m--) {

        // Loop till the iterator value of the first loop
        // using another nested For loop.
        for (int n = 0; n < m; n++) {
            // Print the First Loop iterator value that is m
            // and space character.
            printf("%d ", m);
        }
        // Print the newline character after inner for loop.
        printf("\n");
    }
    return 0;
}

Output:

15
15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 
14 14 14 14 14 14 14 14 14 14 14 14 14 14 
13 13 13 13 13 13 13 13 13 13 13 13 13 
12 12 12 12 12 12 12 12 12 12 12 12 
11 11 11 11 11 11 11 11 11 11 11 
10 10 10 10 10 10 10 10 10 10 
9 9 9 9 9 9 9 9 9 
8 8 8 8 8 8 8 8 
7 7 7 7 7 7 7 
6 6 6 6 6 6 
5 5 5 5 5 
4 4 4 4 
3 3 3 
2 2 
1

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