Benchmark: Heap sort vs Native sort

Script Preparation code:

var arr = [40, 10, 50, 24, 1, 2, 4, -10, 15, 7, 8, 5];

Tests:

Heap
const { floor } = Math; function heapsort(arr, comparator = ascendantComparator) { const count = arr.length; let end = count - 1; heapify(arr, comparator); while (end > 0) { [arr[end], arr[0]] = [arr[0], arr[end]]; end = end - 1; siftDown(arr, 0, end, comparator); } return arr; } function ascendantComparator(a, b) { return a > b ? 1 : a < b ? -1 : 0; } function heapify(array, comparator) { const count = array.length; let start = floor((count - 2) / 2); while (start >= 0) { siftDown(array, start, count - 1, comparator); start = start - 1; } } function siftDown(arr, start, end, comparator) { let root = start; while (root * 2 + 1 <= end) { const lChild = root * 2 + 1; const rChild = lChild + 1; let swap = root; if (comparator(arr[swap], arr[lChild]) < 0) swap = lChild; if (rChild <= end && comparator(arr[swap], arr[rChild]) < 0) swap = rChild; if (swap === root) return; [arr[root], arr[swap]] = [arr[swap], arr[root]]; root = swap; } } heapsort(arr);
Native sort
function sortNumber(a, b) { return a - b; } arr.sort(sortNumber);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Heap
Native sort

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:124.0) Gecko/20100101 Firefox/124.0

Browser/OS: Firefox 124 on Linux

View result in a separate tab

Native sort

7.0M/s

Heap

1.0M/s

View exact numbers

Test name	Executions per second
✓ Native sort	7,032,140 Ops/sec
Heap	1,003,376 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and their pros/cons.

**Benchmark Definition**

The benchmark compares two sorting algorithms: Heap sort and Native sort (built-in JavaScript sort function).

**Options Compared**

1. **Heap Sort**: A comparison-based sorting algorithm that uses a binary heap data structure to sort elements.
2. **Native Sort (JavaScript's built-in sort function)**: A stable, efficient sorting algorithm that uses a combination of techniques, including quicksort and heapsort, to sort elements.

**Pros and Cons**

* **Heap Sort**:
	+ Pros: Simple to implement, stable, and efficient for small datasets.
	+ Cons: Not as efficient as Native Sort for large datasets due to its O(n log n) time complexity.
	+ Note: The implementation in the benchmark uses a custom heapify function, which may not be optimal.
* **Native Sort (JavaScript's built-in sort function)**:
	+ Pros: Optimized and highly efficient for large datasets, stable, and widely supported.
	+ Cons: Can be slower than Heap Sort for small datasets due to its overhead.
	+ Note: The implementation in the benchmark is a simple comparison-based approach, which may not utilize all the optimizations available in modern JavaScript engines.

**Library Used**

None. The benchmark uses built-in JavaScript functions (e.g., `sort()`, `Math.floor()`).

**Special JS Features/Syntax**

* None mentioned in the provided code.

Now, let's look at some alternative approaches:

1. **Quicksort**: Another popular sorting algorithm that can be used as a comparison to Native Sort.
2. **Merge Sort**: A stable sorting algorithm that is similar to Native Sort but has better performance for certain data distributions.
3. **Radix Sort**: A non-comparison sorting algorithm that can be used for specific use cases, such as sorting integers or strings.

To run this benchmark on a different environment or platform, you would need to:

1. Update the `Script Preparation Code` with the necessary modifications to run on your target environment (e.g., changing the browser or adding platform-specific code).
2. Adjust the benchmark settings, such as the dataset size or number of executions per second.
3. Re-run the benchmark using a tool like MeasureThat.net or write your own benchmarking script.

Keep in mind that the performance results may vary depending on the specific environment and configuration used.

Heap sort vs Native sort (version: 0) Benchmark.js

Comparing performance of: `Heap vs Native sort`

Created: 7 years ago by: Guest

Go to the latest result

Heap

Native sort

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Heap sort vs Native sort (version: 0) Benchmark.js

Comparing performance of: Heap vs Native sort

Created: 7 years ago by: Guest

Go to the latest result

Heap

Native sort

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

Related benchmarks

Comparing performance of: `Heap vs Native sort`