Benchmark: Find the stray v3

Script Preparation code:

function stray_happy(numbers) {
  numbers = numbers.sort((a, b) => a - b);
  if (numbers[0] !== numbers[1]) {
    return numbers[0];
  }
  else {
    return numbers[numbers.length - 1];
  }
}


function stray_heretic(numbers) {
  return numbers.find(i => numbers.filter(j => j === i).length === 1);
}


function stray_shaye(numbers) {
  return +numbers.sort((a, b) => a - b)
  	.filter((n,i,a) => (i === 0 && a[0] !==a[1]) || (i === a.length-1 && a[a.length-1] !== a[a.length-2]));
}

function stray_user(a) {
  return a.find(v => a[0] != a[1] ? v != a[2] : v != a[0])
}

function stray_eric(numbers) {
  if (numbers[0] != numbers[1] && numbers[0] != numbers[2]){
      return numbers[0];
  }
  return numbers.find(i => i !== numbers[0]);
}

N = 100
var numbers = Array(N).fill(1);
numbers[Math.floor(Math.random()*N)] = 2;

Tests:

stray_happy
var n = stray_happy(numbers)
stray_heretic
var n = stray_heretic(numbers)
stray_shaye
var n = stray_shaye(numbers)
stray_user
var n = stray_user(numbers)
stray_eric
var n = stray_eric(numbers)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
stray_happy
stray_heretic
stray_shaye
stray_user
stray_eric

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks!

**Benchmark Definition JSON**

The provided JSON represents a benchmark definition, which outlines the rules and structure for creating a microbenchmark. The main elements are:

1. **Script Preparation Code**: This is the JavaScript code that sets up the test environment, including variables, data structures, and any necessary libraries.
2. **Html Preparation Code**: This section is empty in this example, indicating that no HTML preparation code is required.

**Individual Test Cases**

The individual test cases are defined in a separate array, each representing a specific benchmark definition. These definitions include:

1. `stray_happy`
2. `stray_heretic`
3. `stray_shaye`
4. `stray_user`
5. `stray_eric`

These functions are designed to find the "stray" element in an array of numbers, where a stray element is defined as an element that does not match its adjacent elements.

**Library Usage**

None of the test cases use any external libraries. However, they do utilize built-in JavaScript features like:

* Array methods (e.g., `sort()`, `filter()`)
* Functions (e.g., `find()`)

**Special JS Features and Syntax**

Some test cases use syntax specific to certain browsers or versions of JavaScript. For example:

* In `stray_shaye`, the `+` operator is used to convert the result of `sort()` to a number, which might not be the expected behavior in older browsers.
* In `stray_user`, the ternary operator (`a[0] != a[1] ? v != a[2] : v != a[0]`) might not be supported in all browsers.

**Approaches Compared**

The test cases compare different approaches to finding the stray element:

1. **Brute Force**: `stray_heretic` uses the `find()` method with a callback function, which iterates through the array and checks each element against its adjacent elements.
2. **Sorting and Scanning**: `stray_shaye` sorts the array and then scans it to find the stray element.
3. **Manual Iteration**: `stray_happy` and `stray_eric` use manual iteration to find the stray element.

**Pros and Cons of Each Approach**

Here's a brief summary:

* Brute Force (`stray_heretic`):
	+ Pros: simple, effective
	+ Cons: may be slower for large arrays due to the extra iteration
* Sorting and Scanning (`stray_shaye`):
	+ Pros: efficient for most cases
	+ Cons: assumes that the array is already sorted, which might not always be true
* Manual Iteration (`stray_happy`, `stray_eric`):
	+ Pros: more control over the iteration process
	+ Cons: may be slower due to manual iteration

**Other Alternatives**

There are other approaches to finding the stray element, such as:

1. Using a hash table or map to keep track of adjacent elements.
2. Utilizing browser-specific features like `Array.prototype.at()` (available in modern browsers).
3. Leveraging libraries like Lodash or Underscore.js for utility functions.

Keep in mind that these alternatives might introduce additional dependencies, complexity, or performance overhead.

Related benchmarks:

Find the stray v3 (version: 0)

Comparing performance of: stray_happy vs stray_heretic vs stray_shaye vs stray_user vs stray_eric

Created: 6 years ago by: Guest

Jump to the latest result

stray_happy

stray_heretic

stray_shaye

stray_user

stray_eric

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):