Table of Contents
A pattern, a regularly repeated arrangement of characters or shapes is among the best ways of making compelling visuals. Forming patterns in code is a really fun and creative way of improving your overall grasp in loops and control structures. We are going to use python for this case, starting from the simplest to more advanced patterns. Let's dive in!
Simple patterns
Divider pattern
def pattern_one():
n = 5
px = n
py = n
for i in range(1, n+1):
for j in range(1, n*2 +1):
if (j == px or j == py):
print("*", end="")
else:
print(" ", end="")
px -= 1
py += 1
print()
pattern_one()Output:
*
* *
* *
* *
* * Hollow right-angled triangle
def pattern_two():
n = 5
for i in range(1, n+1):
for j in range(1, n+1):
if (j == 1 or i == j or i == n):
print("*", end="")
else:
print(" ", end="")
print()
pattern_two()Output:
*
**
* *
* *
*****Hollow triangle
def hollow_triangle(n):
"""Create a hollow triangle pattern"""
for i in range(n):
if i == 0:
print(' ' * (n-1) + '*')
elif i == n-1:
print('*' * (2*n-1))
else:
print(' ' * (n-i-1) + '*' + ' ' * (2*i-1) + '*')
hollow_triangle(5)Output:
*
* *
* *
* *
*********Diamond pattern
def diamond(n):
"""Create a diamond pattern"""
# Upper half
for i in range(n):
print(' ' * (n-i-1) + '*' * (2*i+1))
# Lower half
for i in range(n-2, -1, -1):
print(' ' * (n-i-1) + '*' * (2*i+1))
diamond(5)Output:
*
***
*****
*******
*********
*******
*****
***
*Butterfly pattern
def butterfly(n):
"""Create a butterfly pattern"""
# Upper half
for i in range(n):
print('*' * (i+1) + ' ' * (2*(n-i-1)) + '*' * (i+1))
# Lower half
for i in range(n-1, -1, -1):
print('*' * (i+1) + ' ' * (2*(n-i-1)) + '*' * (i+1))
butterfly(5)Output:
* *
** **
*** ***
**** ****
**********
**********
**** ****
*** ***
** **
* *Hourglass pattern
def hourglass(n):
"""Create an hourglass pattern"""
# Upper half
for i in range(n, 0, -1):
print(' ' * (n-i) + '*' * (2*i-1))
# Lower half
for i in range(2, n+1):
print(' ' * (n-i) + '*' * (2*i-1))
hourglass(5)Output:
*********
*******
*****
***
*
***
*****
*******
*********Advanced patterns
Hollow diamond
def hollow_diamond(n):
"""Hollow diamond"""
for i in range(n):
for j in range(n):
if i + j == n//2 or i - j == n//2 or j - i == n//2 or i + j == n + n//2 - 1:
print('*', end='')
else:
print(' ', end='')
print()
hollow_diamond(5)Output:
*
* *
* *
* *
*There are more patterns, over 100 different ones, but I just wanted to showcase some common few. Feel free to do more research. Always be creative ! ✌️
