Reverse Integer

medium· Bit Manipulationruns: 0

Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 32-bit integer range [-2^31, 2^31 - 1], return 0. Assume the environment does not allow you to store 64-bit integers.

wpm 0acc 100%time 0:000 / 376

class Solution:
    def reverse(self, x: int) -> int:
        INT_MAX = 2**31 - 1
        INT_MIN = -(2**31)
        sign = -1 if x < 0 else 1
        x = abs(x)
        result = 0
        while x:
            result = result * 10 + x % 10
            x //= 10
        result *= sign
        if result > INT_MAX or result < INT_MIN:
            return 0
        return result

click the box to focus · tab inserts 4 spaces · backspace to correct · esc to pause

desktop only

codedrill is a typing game and needs a real keyboard. open this on a laptop or desktop to practice.

you can still browse problems and sections from your phone.