Benchmark: FindLargestProduct

Script Preparation code:

var arr = Array.from(Array(1000).keys())

Tests:

Math.max
const maxValue = Math.max(...arr); const newArr = [...arr].splice(0, arr.indexOf(maxValue)); return Math.max(...newArr) * maxValue;
For loop
let largest = arr[0] let secondLargest = arr[1] for (let i = 2; i < arr.length; i++) { const current = arr[i] if (current > largest) { secondLargest = largest largest = current } else if (current > secondLargest && current < largest) { secondLargest = current } } if (largest === secondLargest) { return null // No distinct elements to calculate the product } return largest * secondLargest

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Math.max
For loop

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested, compared options, pros and cons of those approaches, and other considerations.

**Benchmark Definition**

The benchmark definition is a JSON object that describes the test case:
```json
{
    "Name": "FindLargestProduct",
    "Description": null,
    "Script Preparation Code": "var arr = Array.from(Array(1000).keys())\r\n",
    "Html Preparation Code": null
}
```
In summary, this benchmark creates an array of 1000 elements and measures the execution time of two different algorithms to find the largest product:

1. **Math.max()**: Using the `Math.max()` function with spread syntax (`...arr`) to create a new array with the maximum element.
2. **For loop**: Iterating through the array using a for loop to find the largest and second-largest elements.

**Options Compared**

The two options being compared are:

1. **Math.max()**: A built-in JavaScript function that finds the maximum value in an array.
2. **For loop**: A traditional iteration approach using a for loop to find the largest and second-largest elements.

**Pros and Cons of Each Approach**

**Math.max():**

Pros:

* Fast execution time due to optimized native implementation
* Easy to read and write
* Leverages modern JavaScript features

Cons:

* May not be suitable for all scenarios, e.g., when the array is very large or has a complex data structure
* Can lead to slower performance if used with large arrays due to array creation overhead

**For loop:**

Pros:

* More control over iteration and logic
* Suitable for complex data structures or edge cases
* Can be more predictable in terms of execution time

Cons:

* Slower execution time compared to Math.max()
* Requires more code and can be less readable

**Other Considerations**

* **Array creation**: In the Math.max() approach, an array is created using `Array.from(Array(1000).keys())`. This can lead to slower performance if the array size is very large. The for loop approach avoids this overhead.
* **Cache locality**: Modern CPUs use cache locality to improve performance. The Math.max() approach may not leverage cache locality as well as the for loop approach, which accesses elements in a contiguous sequence.

**Library Usage**

There are no libraries explicitly mentioned in the benchmark definition or test cases. However, the `Array.from()` method is used, which is a part of the ECMAScript standard and implemented by most modern browsers and Node.js engines.

**Special JS Features or Syntax**

The benchmark defines two special features:

1. **Spread syntax (`...arr`)**: Used in the Math.max() approach to create a new array with the maximum element.
2. **Arrow functions ( implicit, e.g., `() => {}`)**: Not explicitly used in this benchmark but may be implied by some of the test cases.

Now that we've broken down the benchmark, I hope this explanation helps!

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser/OS: Chrome 118 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Math.max	213570.4 Ops/sec
For loop	15118.4 Ops/sec

Related benchmarks:

FindLargestProduct (version: 1)

Comparing performance of: Math.max vs For loop

Created: one year ago by: Registered User

Jump to the latest result

Math.max

For loop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):