In this tutorial, we will create a Python program to print a hollow right Pascal’s star triangle pattern. This pattern consists of an inverted right triangle made up of stars, with the top side filled with stars and the rest of the triangle having a hollow pattern.
To create this program, we will use nested loops to iterate through the rows and columns of the triangle and print stars based on certain conditions.
Let’s start by creating the Python program to generate the pattern:
def print_hollow_pascals_triangle(rows):
for i in range(rows):
for j in range(i+1):
if j == 0 or j == i or i == rows - 1:
print("*", end="")
else:
print(" ", end="")
print()
# Get user input for the number of rows
rows = int(input("Enter the number of rows for the Pascal's triangle: "))
print_hollow_pascals_triangle(rows)
Now let’s break down the code and the logic behind it:
- We define a function
print_hollow_pascals_triangle
that takes the number of rows as a parameter. - We use nested loops to iterate through the rows and columns of the triangle.
- For each cell in the triangle, we check if it is on the left side, right side, or bottom side of the triangle. If it is, we print a star (
*
), otherwise, we print a space ( - Finally, we print a newline character to move to the next row.
To run this program, simply copy and paste the code into a Python environment or an online Python compiler and run the program. You will be prompted to enter the number of rows for the Pascal’s triangle, and the program will print the desired hollow right Pascal’s star triangle pattern.
I hope this tutorial was helpful in understanding how to create a hollow right Pascal’s star triangle pattern in Python. Feel free to experiment with the code and modify it to create different patterns and shapes!
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