How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

What difficulty level is this interview question?

This is a medium difficulty Coding & Algorithms question, commonly asked during Technical Screen rounds at Uber.

What role is this question designed for?

This question is commonly asked for Data Scientist candidates at Uber during technical interviews.

Move zeros to front | Uber Interview Question

Move zeros to front

Last updated: Apr 2, 2026

Quick Overview

This question evaluates array manipulation and in-place algorithm skills, specifically competency in stable element reordering, index management, and space/time complexity considerations within the Coding & Algorithms domain.

medium
Uber
Coding & Algorithms
Data Scientist

Uber

Jan 18, 2026, 12:00 AM

Data Scientist

Technical Screen

Coding & Algorithms

Given an integer array nums, move all 0 values to the beginning of the array in place while preserving the relative order of all non-zero elements.

Requirements:

Modify the original array; do not allocate a second array.
Use O(1) extra space.
Preserve the relative order of all non-zero values.

Example:

Input: [1, 0, 2, 0, 3]
Output: [0, 0, 1, 2, 3]

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