Partition Array

Question

Partition Array

Accepted Answer

### 💡 How to Think About This Problem
When implementing **Partition Array** in an interview, the interviewer evaluates your core JavaScript capabilities, syntax familiarity, and edge-case handling.

#### 1. Deconstructing the Requirements
To construct a robust solution:
* **Pre-conditions**: Handle empty collections or incorrect parameter types.
* **Core Logic**: Target the required functional transformation cleanly.

#### 2. Step-by-Step Breakdown

* **Step 1: Input Validation** - Check constraints and boundary values early on.
* **Step 2: Algorithm Implementation** - If predicate returns a Promise, evaluate elements concurrently or sequentially, returning a Promise that resolves to the two partition blocks. Otherwise, split synchronously in a simple loop.
* **Step 3: Complexity Analysis** - We prioritize structural sharing and minimal allocations.

#### 💬 Thinking Aloud (Interview Walkthrough)
Here is how you should naturally talk through this problem during the interview:

> "To s

Partition Array

Understand the problem

Attempt it yourself

Stuck? AI Nudge Available

Study the solution

The solution is waiting

Run the code

Join the discussion

Discussion (0)