Reverse Integer Without Strings | Dataford Interview Questions

How would you reverse a number (like 1284 to 4821) without resorting to string manipulation?

Implement reverse_number(number) using arithmetic operations only. Preserve the sign, remove leading zeroes created by reversal, and return an integer. For example, 1284 returns 4821, -507 returns -705, and 1200 returns 21.

Constraints

number is an integer
-2^31 <= number <= 2^31 - 1
String conversion and string manipulation are not allowed
The result is returned as an integer

Function Signature

def reverse_number(number):

Your question is Reverse Integer Without Strings. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

How would you reverse a number (like 1284 to 4821) without resorting to string manipulation?

Constraints

number is an integer
-2^31 <= number <= 2^31 - 1
String conversion and string manipulation are not allowed
The result is returned as an integer

Function Signature

def reverse_number(number):

Your question is Reverse Integer Without Strings. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.