Python: Write a program to find the reverse of given number.

 

Question: 

Write a program in python to find the reverse of given number.

 

Answer:

 

num=int(input("Enter the number:"))     # At this point we have taken an integer value from console.

 

 rev=(rev*10+num%10)         

# At this point we are finding the last number of integer stored in the "num" and that last number is added in previous 10th place of  "rev"(rev*10).

 

num=num//10      

# At this point last digit will be removed from number. "//" removed remainder from the number .

                               

code

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num=int(input("Enter the number:"))
rev=0
while(num>0):
    rev=(rev*10+num%10)
    num=num//10
print("reverse =",rev)

 

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Output is:

 

Enter the number:98765123
reverse= 32156789

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Above code can also be write as below in simplest way:

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num=int(input("Enter the number:"))
reverse = 0
remainder = 0
while(num>0):
    remainder = num%10
    reverse = reverse*10 + remainder
    num = num//10

print("reverse=",reverse)

 

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Note:

you could run the above commands on online compiler. go to the below link and copy pest the code there and play with code to understand.

Link: https://www.programiz.com/python-programming/online-compiler/