Python Program To Reverse a Number Using For Loop

In this tutorial, you will learn to write a Python Program To Reverse a Number Using For Loop.

To understand this program you should have an understanding of the following topics:

1. For Loop

Python Program To Reverse a Number Using For Loop

num = int(input("Enter a number: "))
num_str = str(num)

reverse_str = ""
for i in range(len(num_str)-1, -1, -1):
    reverse_str += num_str[i]

reverse_num = int(reverse_str)

print("The reversed number is:", reverse_num)

Output

In this program, we first prompt the user to input a number.

We then convert the number to a string using str(num) and store it in a variable called num_str.

We then declare an empty string called reverse_str.

We use a for loop to iterate over the characters of num_str in reverse order.

We use the range() function to generate a sequence of indices that start at the last index of num_str and go down to the first index.

Inside the loop, we append each character of num_str to reverse_str in reverse order by using the += operator.

Once the loop finishes, we have the reverse of the number as a string.

We convert it back to an integer using int(reverse_str) and store it in a variable called reverse_num.

Finally, we print out the value of reverse_num, which is the reversed number.