Reverse Array Without Extra Space | Dataford Interview Questions

Write code to reverse an array without using another array. Implement the reversal in place, modifying the provided array and using only constant extra space. Define reverse_array(arr) to return the reversed array after mutation; support empty, single-element, and duplicate-value arrays.

Constraints

0 <= len(arr) <= 10^5
arr contains arbitrary values
The reversal must modify arr in place
Use O(1) auxiliary space

Function Signature

def reverse_array(arr):

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Problem

Constraints

0 <= len(arr) <= 10^5
arr contains arbitrary values
The reversal must modify arr in place
Use O(1) auxiliary space

Function Signature

def reverse_array(arr):

Your question is Reverse Array Without Extra Space. 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.