Benchmark: For vs Min1 - MeasureThat.net

Script Preparation code:

function shuffle(array) {
  for (let i = array.length - 1; i > 0; i -= 1) {
    const j = Math.floor(Math.random() * (i + 1));
    [array[i], array[j]] = [array[j], array[i]];
  }
}

function getRandomArray(size) {
  const arr = Array(size).fill(0).map((el, i) => i);
  shuffle(arr);
  return arr;
}

var arr = getRandomArray(1e6);

Tests:

For
var min = arr[0]; for (var i = 0; i < arr.length; i += 1) { if (arr[i] < min) { min = arr[i]; } }
Math.min
var min = arr[0]; var l = arr.length; for (var i = 0; i < l; i += 1) { if (arr[i] < min) { min = arr[i]; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
For
Math.min

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 explaining the provided benchmark.

**Benchmark Definition JSON**

The benchmark definition defines two JavaScript microbenchmarks: "For" and "Min1". The `Script Preparation Code` section contains two functions:

*   `shuffle(array)`: This function shuffles an array using a Fisher-Yates shuffle algorithm. It's used to generate a random array for the benchmarks.
*   `getRandomArray(size)`: This function creates an array of a specified size, fills it with numbers from 0 to the size minus one, and then shuffles it using the `shuffle(array)` function.

The `Html Preparation Code` section is empty, indicating that this benchmark doesn't require any HTML preparation code.

**Test Cases**

There are two test cases:

*   "For": This benchmark tests the performance of a simple loop that finds the minimum value in an array.
    ```javascript
var min = arr[0];
for (var i = 0; i < arr.length; i += 1) {
  if (arr[i] < min) {
    min = arr[i];
  }
}
```
*   "Math.min": This benchmark tests the performance of using the built-in `Math.min()` function to find the minimum value in an array.
    ```javascript
var min = arr[0];
var l = arr.length;
for (var i = 0; i < l; i += 1) {
  if (arr[i] < min) {
    min = arr[i];
  }
}
```
**Options Compared**

The benchmark compares two approaches:

*   Manual loop: The "For" test case uses a manual loop to find the minimum value in an array.
*   Built-in `Math.min()` function: The "Math.min" test case uses the built-in `Math.min()` function to find the minimum value in an array.

**Pros and Cons**

Here's a brief overview of the pros and cons of each approach:

*   Manual loop (For):
    *   Pros:
        *   Can be more intuitive for some developers.
        *   May be more suitable for specific use cases where the `Math.min()` function isn't available or desired.
    *   Cons:
        *   Can be slower due to the overhead of using a loop and variable assignments.
*   Built-in `Math.min()` function (Math.min):
    *   Pros:
        *   Generally faster than a manual loop, as it's optimized for performance.
        *   More concise and easier to read.
    *   Cons:
        *   May not be suitable for specific use cases where the `Math.min()` function isn't available or desired.

**Library**

There is no library used in this benchmark. However, note that some JavaScript implementations may provide additional functions or optimizations that could affect performance.

**Special JS Features/Syntax**

None of the provided benchmarks use any special JavaScript features or syntax.

**Other Alternatives**

If you're interested in exploring alternative approaches for finding the minimum value in an array, here are a few examples:

*   `Array.prototype.reduce()` method: This method can be used to find the minimum value in an array by providing a custom reduction function.
    ```javascript
arr.reduce((min, current) => min < current ? min : current)
```
*   Using `Array.prototype.sort()` method with the `sort` option set to `ascending`: This method sorts the array and returns it. The first element is guaranteed to be the minimum value in an ascending sorted order.
    ```javascript
arr.sort((a, b) => a - b)[0]
```
*   Using a custom sorting algorithm like quicksort or mergesort: These algorithms can be used to sort the array and find the minimum value.

Keep in mind that these alternatives may have different performance characteristics compared to the manual loop and `Math.min()` function approaches.

Related benchmarks:

For vs Min1 (version: 0)

Comparing performance of: For vs Math.min

Created: 5 years ago by: Guest

Jump to the latest result

For

Math.min

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):