Benchmark: Array Stack/Queue VS Custom Stack/Queue 2

Script Preparation code:

	function Custom(iterable = null) {
		if (iterable !== null) {
			this.array = Array.from(iterable);
		} else {
			this.array = [];
		}
      	this.length = this.array.length;
		this.index0 = 0;
	}
	Custom.prototype.item = function (accessor) {
		return this.array[this.index0 + Number(accessor)];
	};
	Custom.prototype.set = function (index, value) {
		const newIndex = this.index0 + Number(index);
		if (newIndex >= this.length) {
			this.length = newIndex + 1;
		}
		this.array[newIndex] = value;
	};
	Custom.prototype.shift = function () {
		if (this.length !== 0) {
			this.length--;
			this.index0++;
			return this.array[this.index0 - 1];
		}
		return undefined;
	};
	Custom.prototype.pop = function () {
		if (this.length !== 0) {
			this.length--;
			return this.array[this.index0 + this.length];
		}
		return undefined;
	};
	Custom.prototype.push = function (value) {
		this.array[this.index0 + this.length] = value;
		this.length++;
	};
var a1 = new Array(65535);
var a2 = new Array(65535);
var q = new Custom(new Array(65535));
var s = new Custom(new Array(65535));

Tests:

Array Shift
a1.shift(); a1.shift(); a1.shift();
Array Pop
a2.pop(); a2.pop(); a2.pop();
Custom Shift
q.shift(); q.shift(); q.shift();
Custom Pop
s.pop(); s.pop(); s.pop();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array Shift
Array Pop
Custom Shift
Custom Pop

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

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Let's break down what is being tested in the provided JSON.

**Benchmark Definition:**
The benchmark compares three implementations of stack/queue data structures:

1. **Array-based implementation**: This uses JavaScript arrays for both pushing and popping elements, with `shift()` removing the first element and `pop()` removing the last element.
2. **Custom non-mutative Stack/Queue implementation**: This custom implementation creates a new array from an iterable (or an empty array if none is provided), and provides methods to push, pop, shift, and set items in it.

**Options compared:**

* Array-based implementation vs. Custom implementation for pushing and popping elements.
* The pros of the array-based approach are:
	+ Simplicity and ease of use.
	+ No need to create a custom data structure or manage memory.
* The cons of the array-based approach are:
	+ Performance might suffer due to slow element access and manipulation in an array.
	+ Arrays can be large, which may lead to performance issues.
* The pros of the Custom implementation are:
	+ More efficient for large datasets since it avoids unnecessary element creation and copying.
	+ Can potentially optimize performance by reusing memory efficiently.
* The cons of the Custom implementation are:
	+ Requires more code and expertise to implement correctly.

**Library usage:**
In this benchmark, no external libraries are used. However, JavaScript's built-in `Array` data structure is utilized extensively for both implementations.

**Special JS feature or syntax:**
There isn't any special JavaScript feature or syntax being leveraged in these test cases. The focus is on comparing the performance of different implementation strategies.

**Alternatives:**
Other alternatives to implementing stack/queue data structures include:

* Using a library like `Queue` from the `pizzicato` library, which provides a queue data structure.
* Implementing a linked list-based queue or stack for improved performance and memory efficiency.
* Using an external data structure like a circular buffer.

Keep in mind that these alternatives would likely have their own trade-offs in terms of complexity, maintainability, and performance.

Related benchmarks:

Array Stack/Queue VS Custom Stack/Queue 2 (version: 5)

Compares Arrays & Shift/Pop against custom non-mutative Stack/Queue implementations.

Comparing performance of: Array Shift vs Array Pop vs Custom Shift vs Custom Pop

Created: 8 years ago by: Registered User

Jump to the latest result

Array Shift

Array Pop

Custom Shift

Custom Pop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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