Python Program to Get Reverse of a Number codigence

Python Program to Get Reverse of a Number codigence

• Python Program to get Reverse of a Number using For Loop.
• Reverse Number in Python using While Loop.
• Reverse Number in Python using slicing.

Overview of Reverse Number in Python

Reverse of a number is the revese order of its digits.For Example reverse of 12345 id 54321.

Python Program to get Reverse Number using For Loop

• Define a function to get Reverse No.
• Let's have a function named 'reverse_num' and take the argument 'no' for number to get reverse of number.
• Now Inside the Function,
• copy the value of no into a temporary variable,say dup_no.
• Now initialize a variable,say 'rev_no' to zero.This will store the reverse of the number.
• Using for loop get the reverse of number.
• Call the function to get reverse of number and print the Final results.

#python program to reverse a num

#using for loop
def reverse_num(no: int):
    dup_no = no #duplicating num
    rev_no = 0 
    for i in range(len(str(no))):
        digit = dup_no % 10
        rev_no = rev_no*10 + digit
        dup_no//=10

    return rev_no

print(f"Reverse of 12345 = {reverse_num(12345)}")

Output

Reverse of 12345 = 54321

Python Program to get Reverse Number using While Loop

• Define a function to get Reverse No.
• Let's have a function named 'reverse_num' and take the argument 'no' for number to get reverse of number.
• Now Inside the Function,
• copy the value of no into a temporary variable,say dup_no.
• Now initialize a variable,say 'rev_no' to zero.This will store the reverse of the number.
• Using while loop get the reverse of number.
• Call the function to get reverse of number and print the Final results.

#using while loop
def reverse_num(no: int):
    dup_no = no
    rev_no = 0
    while dup_no != 0:
        digit = dup_no % 10
        rev_no = rev_no*10 + digit
        dup_no//=10

    return rev_no

print(f"Reverse of 12345 = {reverse_num(12345)}")

Output

Reverse of 12345 = 54321

Python Program to get Reverse Number using slicing

• Define a function to get Reverse No.
• Let's have a function named 'reverse_num' and take the argument 'no' for number to get reverse of number.
• Now Inside the Function,
• copy the value of no into a temporary variable,say dup_no.
• Using slicing loop store the reverse of number into a variable, say rev_no.
• Call the function to get reverse of number and print the Final results.

#using slicing
def reverse_num(no: int):
    rev_no = str(no)[::-1]
    return rev_no

print(f"Reverse of 12345 = {reverse_num(12345)}")

Output

Reverse of 12345 = 54321