Apple 26NG SDE VO|11.18 A Round of Coding - Follow-up Explosions of the Many Kinds

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"It's not that the questions are hard, it's that follow-up doesn't give you a break."

This year's fall recruiting Apple Newcomer posts are really getting harder with the naked eye. Our cadet's VO experience was typical:
The coding itself is solid, but there are so many follow-ups that you could have a small workshop on it.
Overall, though, the pacing was solid, the delivery was smooth, the logic was clean, and the interviewer was very buy-in throughout.

Here's a complete recap of the round's experience for you, following the real process.

Apple 26NG SDE VO

Background of trainees

  • Master in CS, American University
  • Internship in backend + data cleansing related
  • Volume of questions 250+
  • Familiarity with double pointers, binary search, sliding window
  • English expression is not bad, just on the fast side, we did a couple of tempo drills ahead of time
  • VO coaching by Programhelp for this round (structured narrative + follow-up preview)

This round of questions eats up a lot of basic skills + thought structure, which just happens to be his strong suit.

Opening experience: American relaxation, but watching you from the shadows

The interviewer is a typical American guy, with a bright voice and a few pleasantries right off the bat. But here's the thing about Apple VOs:
Even if the atmosphere is relaxed, he's still judging whether your delivery is clear, organized, and on-topic.

The opening five minutes were spent talking about all of this:

  • What modules did the internship
  • The trickiest bug I've ever encountered
  • Why you left your last company
  • What's the main thing you've been working on lately?
  • Which Apple teams are interested?

The trainees answered naturally, without piling up keywords or signs of memorization.
Lao listens quite attentively, then laughs a little:

"Alright, let's get to the coding part."

It's official.

Coding: Squares of a Sorted Array

Title Content:

Given a sorted integer array, return a new array of the squares of each number, sorted in non-decreasing order.

The trainee first verbally walked through the ideas (very critical):

  • Original array is sorted
  • Possibly larger after squaring the negative area
  • Shrink to the center with the left and right double pointers
  • Whoever squares the larger number starts at the end of the result.

"Makes sense."
The trainee begins to write code.

def sortedSquares(nums).
    left, right = 0, len(nums) - 1
    res = [0] * len(nums)
    idx = len(nums) - 1

    while left  abs(nums[right]).
            res[idx] = nums[left] * nums[left]
            left += 1
        else: res[idx] = nums[left] * nums[right].
            res[idx] = nums[right] * nums[right]
            res[idx] = nums[right] * nums[right]
        right -= 1

    return res

I also volunteered to test two cases after writing it:
[-4,-1,0,3,10][0,1,9,16,100]
[-7,-3,2,3,11][4,9,9,49,121]

The interviewer nods, "Good. now let's explore some variations."

The result is a straight-forward, Apple-inspired follow-up, with three consecutive follow-up questions.

Follow-up Full process (all really asked)

Follow-up 1: Can we do O(1) Space? arrays allow modification

The trainee gives the program on the spot:

  • Finding the positive and negative index
  • Decreasing absolute value of the left negative area
  • The right non-negative region is increasing
  • With the double pointer merge
  • Because it's in-place, you need to use insertion + local shift

Then the in-place version is knocked out on site.
The interviewer was very pleased, especially as the trainee had clearly stated:

  • in-place adds complexity
  • Decreased code readability
  • But the space meets the requirements

Very plus.

Follow-up 2: Lots of zeros in an array, can it be optimized?

The points given by the trainees were spot on:

  • Count the number of zeros first.
  • zero squared is still zero, just batch fill the front part
  • The remaining positive and negative areas are merged.
  • More stable time, no need to compare zero side

The interviewer nodded again, "Good observation."

Follow-up 3: Can we do O(n) if the inputs are not sorted?

The logic of the trainee's response was very standard:

  • If there is no value range restriction:
    → No, optimality still requires ordering O(n log n)
  • If the range is limited and the integers are not large:
    → can do O(n) with counting array
  • Decide if you can optimize based on domain

The presentation is structured without being wordy.

Overall VO performance: stable, fast, clear and logical

Throughout the round, the rhythm was a "solid" one:

  • First the idea and then the code.
  • follow up Structured answers to each question
  • Code is easy to read, not showy
  • Active complementary complexity and trade-off
  • No haste, no flutter, no nonsense

The interviewer is "persuaded" throughout.
An evaluation was also given at the end:

"I like how you articulate your thoughts."

Overall, they are of the steady-over type.

How Programhelp VO Assist Works

The biggest difficulty with Apple's coding VOs isn't the questions at all:

  • follow-up High density
  • fast-paced
  • Requires structured expression
  • You can't panic, you can't answer randomly, you can't talk too much.

Programhelp in VO Assistiance On can help you:

  • Real-time voice alerts (clarify / edge case / trade-off)
  • Simulate Apple's high-frequency follow-up so you can step over the pitfalls ahead of time
  • Helps you train your "structured response rhythm".
  • Adjust the speed of speech and sentence patterns to sound more professional
  • The coding site prompts for clearer naming and more concise comments.

So even though the number of follow-ups in this round was exaggerated, the trainees were still steady throughout.

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