Python Program to Print an Inverted Star Pattern

In this article, we'll learn how to print inverted star patterns in Python. An inverted star pattern displays stars in descending order, where each row has fewer stars than the previous one. For example, with N=5 rows ?

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Basic Inverted Star Pattern

The most common approach uses nested for loops − the outer loop controls rows, and the inner loop prints stars for each row.

Using Nested Loops

Here's how to create an inverted star pattern with spaces between stars ?

# Number of rows
N = 6 
for i in range(N, 0, -1):
    for j in range(i):
        print("*", end=' ')
    print()  # New line after each row

* * * * * * 
* * * * * 
* * * * 
* * * 
* * 
* 

Using Single Loop

You can also create the pattern using string multiplication in a single loop ?

n = 6  
for i in range(n, 0, -1):
    print('*' * i)

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Inverted Star Pyramid Pattern

An inverted pyramid pattern centers the stars and adds leading spaces to create a triangular shape that narrows downward.

Algorithm

• Start with N rows
• For each row i (from N down to 1):
• − Print (N-i) spaces for centering
• − Print (2*i-1) stars
• − Move to next line

Example

Here's the implementation using three loops ?

N = 5
for i in range(N, 0, -1):
    # Print leading spaces
    for j in range(N - i):
        print(' ', end='') 
    # Print stars
    for j in range(2 * i - 1):
        print('*', end='') 
    print()  # New line

*********
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Comparison

Conclusion

Inverted star patterns use nested loops with descending ranges. Use basic patterns for simple displays and pyramid patterns for centered, decorative output.