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Given the number of rows of the Triangle, the task is to Print a Hollow Inverted Right Triangle Star Pattern in C, C++, and Python.
Examples:
Example1:
Input:
Given number of rows of the Hollow Inverted Right Triangle Pattern =7
Output:
******* * * * * * * * * * * *
Example2:
Input:
Given number of rows of the Hollow Inverted Right Triangle Pattern =9 Given character to print ='^'
Output:
^^^^^^^^^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
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Program to Print Hollow Inverted Right Triangle Star Pattern in C, C++, and Python
Below are the ways to print a Hollow Inverted Right Triangle Star Pattern in C, C++, and Python.
Method #1: Using For Loop(Star Character)
Approach:
- Give the number of rows of the Hollow 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 from the iterator value of the first loop to 0 using another nested For loop.
- If m equals zero, rows, n, or n equals one value, the if statement prints stars.
- Else print 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 Hollow Inverted Right Triangle as static input and store it in a variable.
triNumRows = 7
# Loop from the given number of rows to 0 using For loop and take iterator value as m.
for m in range(triNumRows, 0, -1):
# Loop from the iterator value of the first loop to 0 using another nested For loop.
for n in range(m, 0, -1):
# If m equals zero, rows, n, or n equals one value, the if statement prints stars.
if m == 1 or m == triNumRows or n == 1 or n == m:
print('*', end='')
else:
print(' ', end='')
# Print the newline character after inner for loop.
print()
Output:
******* * * * * * * * * * * *
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 = 7;
// 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 from the iterator value of the first loop to
// 0 using another nested For loop.
for (int n = m; n > 0; n--) {
// If m equals zero, rows, n, or n equals one
// value, the if statement prints stars.
if (m == 1 || m == triNumRows || n == 1
|| n == m)
cout << "* ";
else
cout << " ";
}
// Print the newline character after inner for loop.
cout << endl;
}
return 0;
}
Output:
******* * * * * * * * * * * *
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 = 7;
// 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 from the iterator value of the first loop to
// 0 using another nested For loop.
for (int n = m; n > 0; n--) {
// If m equals zero, rows, n, or n equals one
// value, the if statement prints stars.
if (m == 1 || m == triNumRows || n == 1
|| n == m)
printf("* ");
else
printf(" ");
}
// Print the newline character after inner for loop.
printf("\n");
}
return 0;
}
Output:
******* * * * * * * * * * * *
Method #2: Using For Loop(User Character)
Approach:
- Give the number of rows of the Hollow Inverted Right Triangle as static input and store it in a variable.
- Give the character to print 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 from the iterator value of the first loop to 0 using another nested For loop.
- If m equals zero, rows, n, or n equals one value, the if statement prints stars.
- Else print 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 Hollow Inverted Right Triangle as user input using int(input()) and store it in a variable.
- Give the Character as user input using input() and store it in another 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 = '))
# Give the Character as user input using input() and store it in another variable.
givencharacter = input('Enter some random character = ')
# Loop from the given number of rows to 0 using For loop and take iterator value as m.
for m in range(triNumRows, 0, -1):
# Loop from the iterator value of the first loop to 0 using another nested For loop.
for n in range(m, 0, -1):
# If m equals zero, rows, n, or n equals one value, the if statement prints stars.
if m == 1 or m == triNumRows or n == 1 or n == m:
print(givencharacter, end='')
else:
print(' ', end='')
# Print the newline character after inner for loop.
print()
Output:
Enter some random number of rows of the Inverted Right Triangle Pattern = 9 Enter some random character = ^ ^^^^^^^^^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
2) C++ Implementation
- Give the number of rows of the Hollow Inverted Right Triangle as user input using cin and store it in a variable.
- Give the Character as user input using cin and store it in another 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;
char givencharacter;
cout << "Enter some random number of rows of the "
"Inverted Right Triangle Pattern = "
<< endl;
cin >> triNumRows;
// Give the Character as user input using cin and store
// it in another variable.
cout << "Enter some random character = " << endl;
cin >> givencharacter;
cout << endl;
// 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 from the iterator value of the first loop to
// 0 using another nested For loop.
for (int n = m; n > 0; n--) {
// If m equals zero, rows, n, or n equals one
// value, the if statement prints stars.
if (m == 1 || m == triNumRows || n == 1
|| n == m)
cout << givencharacter << " ";
else
cout << " ";
}
// 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 = 9 Enter some random character = ^ ^^^^^^^^^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
3) C Implementation
- Give the number of rows of the Hollow Inverted Right Triangle as user input using scanf and store it in a variable.
- Give the Character as user input using scanf and store it in another 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;
char givencharacter;
// Give the Character as user input using scanf and
// store it in another variable.
scanf("%d", &triNumRows);
scanf("%c", &givencharacter);
printf("\n");
// 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 from the iterator value of the first loop to
// 0 using another nested For loop.
for (int n = m; n > 0; n--) {
// If m equals zero, rows, n, or n equals one
// value, the if statement prints stars.
if (m == 1 || m == triNumRows || n == 1
|| n == m)
printf("%c ", givencharacter);
else
printf(" ");
}
// Print the newline character after inner for loop.
printf("\n");
}
return 0;
}
Output:
9^ ^^^^^^^^^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
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