Reverse Integers Without Built-ins | Dataford Interview Questions

Reverse positive and negative integers without using built-in functions. Implement reverse_integer(x) using arithmetic operations only, without converting the integer to a string or using built-in reversal, absolute-value, or digit-processing functions. Return the integer with its digits reversed while preserving its sign; return 0 for input 0.

Constraints

-2^31 <= x <= 2^31 - 1
The input is an integer.
Do not convert x to a string.
Do not use built-in reversal, absolute-value, or digit-processing functions.

Function Signature

def reverse_integer(x):

Your question is Reverse Integers Without Built-ins. 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

Constraints

-2^31 <= x <= 2^31 - 1
The input is an integer.
Do not convert x to a string.
Do not use built-in reversal, absolute-value, or digit-processing functions.

Function Signature

def reverse_integer(x):

Your question is Reverse Integers Without Built-ins. 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.