python pattern programming

-

PYTHON PATTERN PROGRAMMING


Python nested loop:
Python allow programmer to use nested loops.Nested loop means when one loop is define into another loop is known as nested loop,in which one is called inner loop and another is called outer loop.In which when outer loop's condition is true than inner loop will be execute.
we use the concept of nested loop in pattern programming etc.

syntax:

while(condition):
    while(condition):
        statement x
    statement y  


Some examples of nested loop.
Nested loop program.
Q. write  a program to print following pattern.

P
P Y
P Y T
P Y T H
P Y T H O
P Y T H O N


str="PYTHON"
for i in range(0,6):

    print()

    for j in range(0,i+1):

        print(str[j], end=' ')
Q. write  a program to print following pattern.

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


Q. write  a program to print following pattern.


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


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

Q. write  a  program to print following pattern.

 1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
for i in range(1,6):
    print()
    for j in range(1,i+1):
        print(i, end=' ')

Q. write  a  program to print following pattern.

               1
           1 2 1
        1 2 3 2 1
     1 2 3 4 3 2 1
  1 2 3 4 5 4 3 2 1
N = 5
for i in range(1,N+1):
    for k in range(N,i,-1):
        print(" ",end=' ')
    for j in range(1,i+1):
        print(j, end=' ')
    for l in range(i-1,0,-1):  
        print(l,end=' ')  
    print()

Q. write  a  program to print following pattern.

      *
   *  *
 *      *
*        *
 *      *
  *  *
     *
for row in range(7):
    for col in range(7):
        if(row+col==3 or col-row==3 or row-col==3 or row+col==9 ):
            print("*", end="")
        else:
            print(end=" ")  
    print()          

 Q. write a program to print following pattern.

 1             2          3          4         5       

16          17        18        19        6       

15         24          25       20        7

14          23         22       21        8

 13          12         11       10        9
num=int(input("enter value of row :"))
n_list=[[0 for x in range(num)] for y in range(num)]

n=1
low=0
heigh=num-1
count=int(num+1/2)
for i in range(count):
    for j in range(low,heigh+1):
        n_list[i][j]=n
        n=n+1
    for k in range(low+1,heigh+1):
        n_list[k][heigh]=n
        n=n+1
    for k in range(heigh-1,low-1,-1):
        n_list[heigh][k]=n
        n=n+1  
    for k in range(heigh-1,low,-1):
        n_list[k][low]=n
        n=n+1      
    low=low+1
    heigh=heigh-1



for i in range(num):
    for j in range(num):
        print(n_list[i][j],end= "\t ")
    print("\n\n")    

Q.write a program to print the following pattern.

 5   5   5   5   5   5   5   5   5  
5   4   4   4   4   4   4   4   5
5   4   3   3   3   3   3   4   5
5   4   3   2   2   2   3   4   5
5   4   3   2   1   2   3   4   5
5   4   3   2   2   2   3   4   5
5   4   3   3   3   3   3   4   5
5   4   4   4   4   4   4   4   5
5   5   5   5   5   5   5   5   5
num=int(input("enter value of row :"))
n_list=[[0 for x in range(num)] for y in range(num)]

n=int((num+1)/2)
low=0
heigh=num-1
count=int((num+1)/2)

for i in range(count):
    for j in range(low,heigh+1):
        n_list[i][j]=n
        
    for k in range(low+1,heigh+1):
        n_list[k][heigh]=n
        
    for k in range(heigh-1,low-1,-1):
        n_list[heigh][k]=n
         
    for k in range(heigh-1,low,-1):
        n_list[k][low]=n
              
    low=low+1
    heigh=heigh-1
    n=n-1


for i in range(num):
    for j in range(num):
        print(n_list[i][j],end= "  ")
    print("")    



Thank you..........
please like and follow my facebook page.....
Let's_code

Decision making statement in python
Lopping_statement_in_python
function_in_python

Comments

Post a Comment

Popular posts from this blog

Decision making statement in python

-
Image
Decision making statement in python In this statement we can take a decision for executing block of statement.if in this case condition is checked.if condition is true then the true part will execute,otherwise false part will execute.        There are four types of decision making statement. (1) simple if statement/single alternative if statement. (2) if-else statement/double alternative if statement. (3) if-else-if statement/else if ladder statement. (4) Nested if statement/compound if statement. (1)simple if statement/single alternative if statement  In this statement if condition is true then true part will execute otherwise no action will generate.  Syntax: if  test expression:     Statement 1     Statement 2     Statement 3    ---------------    ---------------     Statement n Statement x Examples: if  ( age>=18) :    print( "You are eligible for vote" ) (2) if-else statement/double alternative if statement In this statement if co
Read more

Recursive function

-
Image
What  is recursive function ? A recursive function is the function that calls itself during execution of program. Every recursive solution has two major cases, which are fallows: Base case , in which the problem is simple enough to solve directly without making any further calls to the same function. Recursive case , in which first the problem at hand divided into simpler sub-part. Second, the function calls itself but sub-parts of the problem obtained in the first stem. Third, the result is obtained by combining the solutions of simpler sub- part. Thus we see that recursion utilized divide and conquer technique of problem solving.  Divide and conquer technique is a method of solving a given problem by dividing it into two or more smaller instances. Now for understand the recursive function let us see an example of calculating factorial of a number. The factorial of a number id n!= n x (n-1)! Now , 5!= 5 x 4 x 3 x 2 x1     =120 This can be written as: 5!= 5 x  4! 4!= 4 x 3! 3!= 3 X 2
Read more