Python Program to Print Hollow Square Pattern

In this post, we will learn how to write a Python program to print hollow square patterns using for-loop, while-loop, using a function, etc.

So let’s start writing a program to print hollow square patterns in python…

1. Python Program to Print Hollow Square Pattern Using for-loop

Before writing a program few program concepts you have to know:

1. for-loop
2. if-else

Source Code:

size = int(input('Enter Size of the hollow Square: '))

for i in range(size):
   for j in range(size):
      if i == 0 or i == size-1 or j == 0 or j == size-1:
         print("*", end=" ")
      else:
         print(" ", end=" ")
   print("\r")

Output:

2. Python Program to Print Hollow Square Pattern Using while-loop

Before writing this program you should know about:

1. if-else
2. while-loop

Source Code:

size = int(input('Enter Size of the hollow Square: '))

i = 0

while i<size:
    j = 0
    while j<size:
      if i == 0 or i == size-1 or j == 0 or j == size-1:
        print("*", end=" ")
      else:
        print(" ", end=" ")
      j+=1
    print("\r")
    i+=1

Output:

3. Python Program to Print Hollow Square Pattern Using function

Before writing this program you should know about:

1. if-else
2. for-loop
3. Python Function

Source Code:

def hollow_square(size,shape):
    for i in range(size):
        for j in range(size):
            if i == 0 or i == size-1 or j == 0 or j == size-1:
                print(shape, end=" ")
            else:
                print(" ", end=" ")
        print("\r")

size = int(input('Enter Size of the hollow Square: '))
shape = input('Enter character: ')

hollow_square(size,shape)

Output-1:

Output-2: