Benchmark: test-moh1 - MeasureThat.net

Tests:

forloop
const str = 'this is normal string'; const reverseWordsWithin = (str) => { let res = ""; for (let i = str.length - 1; i >= 0; i--){ if(str[i] != " "){ res += str[i]; }; if(str[res.length] == " "){ res += str[res.length]; }; }; return res; }; console.log(reverseWordsWithin(str));
func
const str = 'this is normal string'; const reverseStr = (input) => { const revArr = input.replaceAll(' ', '').split('').reverse(); for (let i = 0; i < revArr.length; i++) { if (input[i] === ' ') revArr.splice(i, 0, ' '); } return revArr.join(''); } console.log(reverseStr(str));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forloop
func

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark data and explain what's being tested, compared, and other considerations.

**Benchmark Definition**

The benchmark definition is empty, which means that the script preparation code is not provided. This suggests that the test cases are written in a specific format, with the actual JavaScript code embedded directly within the `Benchmark Definition` field.

**Individual Test Cases**

There are two test cases:

1. **"forloop"`**

This test case contains the following JavaScript code:
```javascript
const str = 'this is normal string';
const reverseWordsWithin = (str) => {
  let res = "";
  for (let i = str.length - 1; i >= 0; i--) {
    if (str[i] != " ") {
      res += str[i];
    }
    if (str[res.length] == " ") {
      res += str[res.length];
    }
  }
  return res;
};
console.log(reverseWordsWithin(str));
```
This code defines a function `reverseWordsWithin` that reverses the words in a given string. The function iterates over the input string from right to left, appending characters to a result string when it encounters a non-space character.

**"func"`**

The second test case contains the following JavaScript code:
```javascript
const str = 'this is normal string';
const reverseStr = (input) => {
  const revArr = input.replaceAll(' ', '').split('').reverse();
  for (let i = 0; i < revArr.length; i++) {
    if (input[i] === ' ') revArr.splice(i, 0, ' ');
  }
  return revArr.join('');
};
console.log(reverseStr(str));
```
This code defines a function `reverseStr` that reverses the words in a given string. The function first removes spaces from the input and then splits it into an array of characters. It iterates over this array, inserting spaces at the correct positions.

**Comparison**

The two test cases are comparing different approaches to reversing words in a string:

* **"forloop"`**: This approach uses a simple loop to iterate over the input string from right to left, appending characters to a result string when it encounters a non-space character.
* **"func"`**: This approach uses regular expressions and array manipulation to remove spaces from the input and then insert them back in at the correct positions.

**Pros and Cons**

**"forloop"`**:

Pros:

* Simple and easy to understand
* Does not use any external libraries or features

Cons:

* May be slower due to the explicit loop iteration
* Limited flexibility, as it relies on a fixed loop structure

**"func"`**:

Pros:

* Uses built-in methods (e.g., `replaceAll`, `split`, `reverse`) which may be optimized for performance
* More flexible than the "forloop" approach, as it can handle different input sizes and character sets

Cons:

* Uses regular expressions, which can be slower than simple loops
* Requires knowledge of regular expression syntax and usage

**Library Usage**

The test cases use the `replaceAll` method to remove spaces from the input string. This method is part of the ECMAScript 3 (ES3) standard, but it has been largely replaced by more modern methods like `replace()` or `String.prototype.replaceAll()`.

**Special JS Features/Syntax**

Neither test case uses any special JavaScript features or syntax beyond what's commonly available in most browsers. However, if you're interested in exploring more advanced techniques, you could consider using modern language features like:

* Arrow functions (`=>`)
* Template literals (`${}`)
* Optional chaining (`?.`)

Keep in mind that the focus of this benchmark is on the comparison between two simple approaches to reversing words in a string, rather than showcasing cutting-edge JavaScript features.

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36

Browser/OS: Chrome 102 on Linux

View result in a separate tab

Test name	Executions per second
forloop	59676.8 Ops/sec
func	43839.0 Ops/sec

Related benchmarks:

test-moh1 (version: 0)

Comparing performance of: forloop vs func

Created: 2 years ago by: Guest

Jump to the latest result

forloop

func

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):