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Practice Separate the Digits in an Array

Master the Separate the Digits in an Array LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.

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Easy#2553
LeetCode Problem

Separate the Digits in an Array

Given an array of positive integers nums, return an array answer that consists of the digits of each integer in nums after separating them in the same order they appear in nums. To separate the digits of an integer is to get all the digits it has in the same order.

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Problem Breakdown

Understanding the Separate the Digits in an Array Problem

Let's break down this LeetCode problem and understand what makes it challenging in interview settings.

Problem Statement

Given an array of positive integers nums, return an array answer that consists of the digits of each integer in nums after separating them in the same order they appear in nums. To separate the digits of an integer is to get all the digits it has in the same order.

Source: Separate the Digits in an Array on LeetCode. Use the original task for its coding environment and submissions.

EasyProblem #2553
LeetCode

Separate the Digits in an Array

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How PhantomCodeAI Helps

Get real-time assistance for Separate the Digits in an Array problems during coding interviews. PhantomCodeAI provides instant solutions and explanations.

Examples

# Example 1

Input
nums = [13,25,83,77]
Output
[1,3,2,5,8,3,7,7]

# Example 2

Input
nums = [7,1,3,9]
Output
[7,1,3,9]

Constraints

1 <= nums.length <= 1000
1 <= nums[i] <= 10^5

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Frequently Asked Questions

Common questions about solving Separate the Digits in an Array and using PhantomCodeAI during coding interviews.

How does PhantomCodeAI help with LeetCode problems during a coding interview?
PhantomCodeAI reads the problem from a screenshot or listens to it via audio, then generates a complete solution with a step-by-step approach and time/space complexity, so you can focus on explaining your reasoning rather than getting stuck on implementation.
Which programming languages does PhantomCodeAI support?
11 languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set a preferred language to get idiomatic solutions.
Does PhantomCodeAI work with HackerRank, CodeSignal, and CoderPad?
Yes — it works alongside LeetCode, HackerRank, CodeSignal, CoderPad, and HackerEarth, plus any browser-based coding environment.
Can PhantomCodeAI handle follow-up questions and modifications?
Yes. Capture the modified problem by screenshot or audio and get an updated solution within seconds, including new edge cases and optimizations.
Is PhantomCodeAI detectable during live interviews?
PhantomCodeAI runs as a native desktop overlay that does not appear in screen shares, recordings, or proctoring software, and works with Zoom, Google Meet, Microsoft Teams, and major coding platforms.
Should I still practice these problems on my own first?
Yes. The most durable preparation is solving problems unaided first, then using AI afterward to review your approach, complexity, and missed edge cases — use it to debrief and learn, not to skip the reps.

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