25+ Best Pattern Programs in Python for Class 11

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Pattern Programs in Python

Q1. Write a program in Python to print the following pattern

1 2

1 2 3

1 2 3 4

1 2 3 4 5


Ans. 

for i in range(1, 6):
   for j in range(1, i+1):
       print(j, end = " ")
   print()

5 4 3 2 1

5 4 3 2

5 4 3

5 4


Ans.

for i in range(5,0,-1):
   for j in range(5, 5-i,-1):
       print(j, end = " ")
   print()

5 5 5 5 5

4 4 4 4

3 3 3

2 2


Ans.

for i in range(5, 0, -1):
   for j in range(i):
       print(i, end = " ")
   print()

1 2 3 4 5

1 2 3 4

1 2 3

1 2


Ans. 

for i in range(6,0,-1):
   for j in range(1, i):
       print(j, end = " ")
   print()

2 2

3 3 3

4 4 4 4

5 5 5 5 5


Ans. 

for i in range(1, 6):
   for j in range(1, i+1):
       print(i, end = " ")
   print()

Pattern Programs in Python

5
4 4
3 3 3
2 2 2 2
1 1 1 1 1


Ans. 

for i in range(5, 0,-1):
    for j in range(6,i,-1):
        print(i, end = " ")
    print()

5
5 4
5 4 3
5 4 3 2
5 4 3 2 1


Ans.

for i in range(5, 0,-1):
    for j in range(5,i-1,-1):
        print(j, end = " ")
    print()

        1    
           1 2  
       1 2 3 
    1 2  3  4 
 1 2 3  4  5


Ans.

for i in range(5):
   for j in range(5-i-1):
     print(" ",end=" ")
   for j in range(i+1):
     print(j+1, end=" ")
   print()

        1    
           2 2  
       3 3 3 
    4 4  4  4 
 5 5 5  5  5


Ans.

for i in range(5):
   for j in range(5-i-1):
     print(" ",end=" ")
   for j in range(i+1):
     print(i+1, end=" ")
   print()

        1    
           2 1  
       3 2 1 
    4 3  2  1 
 5 4 3  2  1


Ans.

for i in range(5):
    for j in range(5-i-1):
      print(" ", end=" ")
    for j in range(i+1, 0, -1):
      print(j, end=" ")
    print()

Pattern Programs in Python

2 1

3 2 1

4 3 2 1

5 4 3 2 1


Ans. 

for i in range(1, 6):
   for j in range(i, 0, -1):     
        print(j, end = " ") 
   print()

2 3

4 5 6

7 8 9 10

Ans. (This triangle is called Floy'd triangle)

c = 1
st = 2
for i in range(3):
     for j in range(1, st):     
           print(c, end=" ")     
           c += 1 
     print() 
     st = st+1

2 3 4

5 6 7 8 9

Ans. 

c = 1
st = 2
for i in range(3):
     for j in range(1, st):     
           print(c, end=" ")     
           c += 1 
     print() 
     st = st+2

0 1

0 2 4

0 3 6 9

0 4 8 12 16

Ans. 

for i in range(0, 5):
   for j in range(0, i+1):
     print(j*i, end = " ")
   print()

0
0 1
0 1 4
0 1 4 9
0 1 4 9 16

Ans.

for i in range(0, 5):
   for j in range(0, i+1):
     print(j*j, end = " ")
   print()

Pattern Programs in Python

1
4 4
9 9 9
16 16 16 16
25 25 25 25 25


Ans. 

for i in range(1,6):
   for j in range(1,i+1):
     print(i*i, end = " ") #print(i**2, end = " ") can also be written
   print()

1
3 3
5 5 5
7 7 7 7
9 9 9 9 9

Ans. 

for i in range(1,6):
   for j in range(1,i+1):
     print(i*2-1, end = " ")
   print()

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


Ans.

for i in range(1,6):
   for j in range(i):
       print(" * ", end = "")
   print( )

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


Ans.

for i in range(5,0,-1):
    for j in range(i):
        print(" * ", end = "")
    print( )

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


Ans. 

n=5
sp = 2 * n - 2
for i in range(0, n):
   for j in range(0, sp):
     print(end=" ")
   sp = sp - 2
   for j in range(0, i + 1):
     print("* ", end = "")
   print()

Pattern Programs in Python

1  2  3  4  5
1  2  3  4  5
1  2  3  4  5
1  2  3  4  5
1  2  3  4  5


Ans.

for i in range(6):
   for j in range(1,6):
     print(j, end = " ")
   print()

1  1  1  1  1
2  2  2  2  2
3  3  3  3  3
4  4  4  4  4
5  5  5  5  5


Ans.

for i in range(1,6):
   for j in range(1,6):
     print(i, end = " ")
   print()

A
A  B
A  B  B
A  B  C  D
A  B  C  D  E


Ans.

str = "A B C D E"
for i in range(1, 6):
   print(str[ : i*2])

A
B  B
C  C  C
D  D  D  D
E   E  E   E   E


Ans.

str = "ABCDE"
for i in range(5):
   print(str[i]*(i+1))

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

Ans.

num = 5
for i in range (1, num + 1):
      sp = (num - i) * "  "
      print(sp, end = " ")
      for k in range(i, 1, -1):
          print("*", end = " ")
      for j in range(1, i + 1):
          print("*", end = " ")
      print()

Pattern Programs in Python

flow-of-control-in-python-class-11 — **Pattern Programs in Python**

Ans i)

n = 3
for i in range (1, n + 1):
     sp = (n - i) * " "
     sym =  (2 * i - 1) * "*"
     print(sp, sym)
for j in range(n - 1, 0, -1):
     sp = (n - j) * " "
     sym = (2 * j - 1)* "*"
     print(sp, sym)

ii)

num = 5
for i in range (1, num + 1):
     sp = (num - i) * "  "
     print(sp, end = " ")
     for k in range(i, 1, -1):
         print(k, end = " ")
     for j in range(1, i + 1):
         print(j, end = " ")
     print()

iii)

str = "123456"
for i in (str):
   print(" " * int(i) + str[0 : len(str) - int(i)])

OR

num = 5
for i in range (num, 0, -1):
     sp = (num - i) * "  "
     print(sp, end=" ")
     for k in range(1, i + 1):
           print(k, end=" ")
     print()

iv)

num = 3
k = 0
for i in range (1, num + 1):
     sp = (num - i)*" "
     print(sp, end=' ')
     while (k != (2 * i - 1)) :
         if (k == 0 or k == 2 * i - 2) : 
             print("*", end= "")          
         else :              
             print(" ", end = "")          
         k = k + 1     
     k = 0     
     print( ) 
for j in range (num - 1, 0, -1):     
     sp = (num - j) * " "
     print(sp, end=" ")
     k = (2 * j - 1)
     while (k > 0) :
         if (k==1 or k == 2 * j - 1):             
             print("*",end="")
         else:
             print(" ",end="")
         k = k - 1
     print( )

Pattern Programs in Python

aa)

p
p y
p y t
p y t h
p y t h o
p y t h o n


Ans

str = "python"
for i in range(len(str)+1):
   for j in range(i):
     print(str[j], end = " ")
   print()

ab)

           1
        2 2 2
     3 3 3 3 3
  4 4 4 4 4 4 4
5 5 5 5 5 5 5 5 5


Ans.

num = 5
for i in range (1, num + 1):
      sp = (num - i) * "  "
      print(sp, end = " ")
      for k in range(i, 1, -1):
          print(i, end = " ")
      for j in range(1, i + 1):
          print(i, end = " ")
      print()

Pattern Programs in Python

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