Here are a few examples of pattern programs in Python that you can use as a reference:
1. Triangle pattern:
for i in range(1,6):
print("*"*i)This will print a triangle of stars like this:
*
**
***
****
*****2. Reverse triangle pattern:
for i in range(5,0,-1):
print("*"*i)This will print a triangle of stars in the reverse order, like this:
*****
****
***
**
*3. Diamond pattern:
for i in range(1,6):
print(" "*(5-i) + "*"*(2*i-1))
for i in range(4,0,-1):
print(" "*(5-i) + "*"*(2*i-1))This will print a diamond-shaped pattern of stars like this:
*
***
*****
*******
*********
*******
*****
***
*4. Pyramid pattern:
for i in range(1,6):
print(" "*(5-i) + "*"*(2*i-1))This will print a pyramid-shaped pattern of stars like this:
*
***
*****
*******
*********The pattern programs incorporate a lot of nested loops. So if you are not familiar with loops in python, make sure to check out the detailed tutorial on loops in python.
Star Pattern Programs
Following are a few star pattern programs in python.
1. Pyramid Pattern Program
def pattern(n):
k = 2 * n - 2
for i in range(0,n):
for j in range(0,k):
print(end=" ")
k = k - 1
for j in range(0, i+1):
print("*", end=" ")
print("\r")
pattern(5)
Output:
Reverse Pyramid Pattern Program
def pattern(n):
k = 2*n -2
for i in range(n,-1,-1):
for j in range(k,0,-1):
print(end=" ")
k = k +1
for j in range(0, i+1):
print("*", end=" ")
print("\r")
pattern(5)
Output:
Right Start Pattern Program
def pattern(n):
for i in range(0, n):
for j in range(0, i + 1):
print("* ", end="")
print("\r")
for i in range(n, 0 , -1):
for j in range(0, i + 1):
print("* ", end="")
print("\r")
pattern(5)
Output:
Left Start Pattern Program
def pattern(n):
k = 2 * n - 2
for i in range(0, n-1):
for j in range(0, k):
print(end=" ")
k = k - 2
for j in range(0, i + 1):
print("* ", end="")
print("\r")
k = -1
for i in range(n-1,-1,-1):
for j in range(k,-1,-1):
print(end=" ")
k = k + 2
for j in range(0, i + 1):
print("* ", end="")
print("\r")
pattern(5)
Output:
2. Half-Pyramid Pattern Program
def pattern(n):
for i in range(0,n):
for j in range(0, i+1):
print("* " , end="")
print("\r")
pattern(5)
Output:
Left Half-Pyramid Pattern Program
def pattern(n):
k = 2 * n - 2
for i in range(0, n):
for j in range(0, k):
print(end=" ")
k = k - 2
for j in range(0, i + 1):
print("* ", end="")
print("\r")
pattern(5)
Output:
Downward Half-Pyramid Pattern Program
def pattern(n):
for i in range(n, -1, -1):
for j in range(0, i + 1):
print("* ", end="")
print("\r")
pattern(5)
Output:
3. Diamond-Shaped Pattern Program
def pattern(n):
k = 2 * n - 2
for i in range(0, n):
for j in range(0 , k):
print(end=" ")
k = k - 1
for j in range(0 , i + 1 ):
print("* ", end="")
print("\r")
k = n - 2
for i in range(n , -1, -1):
for j in range(k , 0 , -1):
print(end=" ")
k = k + 1
for j in range(0 , i + 1):
print("* ", end="")
print("\r")
pattern(5)
Output:
Diamond Star Pattern Program
for i in range(5):
for j in range(5):
if i + j == 2 or i - j == 2 or i + j == 6 or j - i == 2:
print("*", end="")
else:
print(end=" ")
print()
Output:
4. Hourglass Pattern Program
def pattern(n):
k = n - 2
for i in range(n, -1 , -1):
for j in range(k , 0 , -1):
print(end=" ")
k = k + 1
for j in range(0, i+1):
print("* " , end="")
print("\r")
k = 2 * n - 2
for i in range(0 , n+1):
for j in range(0 , k):
print(end="")
k = k - 1
for j in range(0, i + 1):
print("* ", end="")
print("\r")
pattern(5)
Output:
Number Pattern Programs
Here are a few programs with numeric patterns in java.
1. Simple Numbers Program
def pattern(n):
x = 0
for i in range(0 , n):
x += 1
for j in range(0, i + 1):
print(x , end=" ")
print("\r")
pattern(5)
Output:
2. Pascal’s Triangle Program
def pascal(n):
for i in range(0, n):
for j in range(0, i + 1):
print(function(i, j)," ", end="")
print()
def function(n, k):
res = 1
if (k > n - k):
k = n - k
for i in range(0, k):
res = res * (n - i)
res = res // (i + 1)
return res
pascal(7)
Output:
Half-Pyramid Pattern With Numbers
def pattern(n):
for i in range(1, n):
for j in range(1, i + 1):
print(j, end= " ")
print("\r")
pattern(5)
Output:
3. Diamond Pattern With Numbers
def pattern(n):
k = 2 * n - 2
x = 0
for i in range(0, n):
x += 1
for j in range(0, k):
print(end=" ")
k = k - 1
for j in range(0, i + 1):
print(x, end=" ")
print("\r")
k = n - 2
x = n + 2
for i in range(n, -1, -1):
x -= 1
for j in range(k, 0, -1):
print(end=" ")
k = k + 1
for j in range(0, i + 1):
print(x, end=" ")
print("\r")
pattern(5)
Output:
Descending Order Pattern Program
def pattern(n):
for i in range(n, 0, -1):
for j in range(1, i + 1):
print(j, end=" ")
print("\r")
pattern(5)
Output:
Binary Numbers Pattern Program
def pattern(n):
k = 2 * n - 2
for i in range(0, n):
for j in range(0, k):
print(end=" ")
k = k - 1
for j in range(0, i + 1):
print('10', end="")
print("\r")
pattern(5)
Output:
Characters Pattern Programs
Here are a few pattern programs in python with characters.
Right Alphabetical Triangle
def pattern(n):
x = 65
for i in range(0, n):
ch = chr(x)
x += 1
for j in range(0, i + 1):
print(ch, end=" ")
print("\r")
pattern(5)
Output:
Character Pattern Program
def pattern(n):
k = 2 * n - 2
x = 65
for i in range(0, n):
for j in range(0, k):
print(end=" ")
k = k - 1
for j in range(0, i + 1):
ch = chr(x)
print(ch, end=" ")
x += 1
print("\r")
pattern(7)
Output:
K Shape Character Program
for i in range(7):
for j in range(7):
if j == 0 or i - j == 3 or i + j == 3:
print("*", end="")
else:
print(end=" ")
print()
Output:
Triangle Character Pattern Program
def pattern(n):
k = 2 * n - 2
x = 65
for i in range(0, n):
ch = chr(x)
x += 1
for j in range(0, k):
print(end=" ")
k = k - 1
for j in range(0, i + 1):
print(ch, end=" ")
print("\r")
pattern(5)
Output:
Diamond Shaped Character Pattern Program
def pattern(n):
k = 2 * n - 2
for i in range(0, n):
for j in range(0, k):
print(end=" ")
k = k - 1
x = 65
for j in range(0, i + 1):
ch = chr(x)
print(ch, end=" ")
x += 1
print("\r")
k = n - 2
x = 65
for i in range(n, -1, -1):
for j in range(k, 0, -1):
print(end=" ")
k = k + 1
for j in range(0, i + 1):
ch = chr(x)
print(ch, end=" ")
x += 1
print("\r")
pattern(5)
Output:
we have learned how we can implement different patterns in python using asterisks, numbers, and characters with the help of loops in python.
