Benchmark: Smallest Common Multiple

Tests:

j
function smallestCommons(arr) { arr.sort((a, b) => a - b); const allTheNumbers = createOfNumbersArrayBetween(arr[0], arr[1]); return findLeastCommonMultiple(allTheNumbers); } function createOfNumbersArrayBetween(first, second) { let theArray = []; for (let index = first; index <= second; index++) { theArray.push(index); } return theArray; } function findLeastCommonMultiple(arrayOfNumbers) { let possibleCommonMultiple = 1; let answer; while (!answer) { const result = arrayOfNumbers.every(number => possibleCommonMultiple % number === 0); if (result) { answer = possibleCommonMultiple; } else { possibleCommonMultiple++; } } return answer; } smallestCommons([23, 18]);
a
function smallestCommons(arr) { arr = arr.sort((a, b) => a - b); var lastNum = arr[arr.length - 1]; var firstNum = arr[0]; while (lastNum - 1 > firstNum) { arr.push(lastNum - 1); lastNum = arr[arr.length - 1]; } arr = arr.sort((a, b) => a - b); var commonMultiple = arr[arr.length - 1]; var commonMultipleCount; if (arr[0] < 2) { commonMultipleCount = 1; } else { commonMultipleCount = 0; } while(commonMultipleCount !== arr.length) { commonMultiple += arr[arr.length - 1]; arr.forEach(value => { if (commonMultiple % value === 0 && value !== 1) { commonMultipleCount++; } }); if (commonMultipleCount !== arr.length) { if (arr[0] === 1) { commonMultipleCount = 1; } else { commonMultipleCount = 0; } } } return commonMultiple; } smallestCommons([10, 2]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
j
a

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2906.0 Safari/537.36 OPR/43.0.2420.0 (Edition developer)

Browser/OS: Opera 43 on Windows

View result in a separate tab

Test name	Executions per second
j	3.4 Ops/sec
a	16025.2 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll provide an explanation of the benchmark and its various components.

**Benchmark Definition:**
The benchmark is defined by a JSON object that contains information about the test case. In this case, the benchmark definition is missing, but it seems to be related to finding the smallest common multiple (LCM) of two numbers.

**Individual Test Cases:**

There are two test cases:

1. **Test Case "j":**
	* The benchmark function `smallestCommons` takes an array of two numbers as input and sorts them in ascending order.
	* It then creates an array of numbers between the two inputs using the `createOfNumbersArrayBetween` function.
	* The LCM is found using the `findLeastCommonMultiple` function, which iterates through possible common multiples until it finds one that divides all numbers in the array without a remainder.
2. **Test Case "a":**
	* This test case is similar to Test Case "j", but with some differences:
		+ The sorting is done directly on the input array instead of creating a new sorted array.
		+ A variable `lastNum` is used to keep track of the last number in the sorted array, and another variable `firstNum` is used to store the first number.
		+ An additional while loop is added to insert numbers between `lastNum - 1` and `lastNum`, ensuring that all possible common multiples are considered.

**Options Compared:**

The two test cases compare different approaches to finding the LCM:

1. **Test Case "j":**
	* Uses a more straightforward approach with a simple sorting and iteration.
	* May be slower due to the overhead of creating an array and iterating through it.
2. **Test Case "a":**
	* Uses a more complex approach with additional variables and loops.
	* May be faster due to reduced iterations and improved memory access patterns.

**Pros and Cons:**

* Test Case "j":
	+ Pros:
		- Easy to understand and implement.
		- Simple code structure.
	+ Cons:
		- May be slower due to array creation and iteration overhead.
* Test Case "a":
	+ Pros:
		- Reduces iterations and improves memory access patterns.
		- May be faster due to optimized loop structures.
	+ Cons:
		- More complex code structure, making it harder to understand and implement.

**Other Considerations:**

* The use of `var` instead of `let` or `const` in Test Case "a" is an older JavaScript syntax and may not be compatible with modern browsers.
* The absence of error handling or edge cases in both test cases is a concern, as they may not work correctly for invalid inputs or special cases.

**Alternatives:**

Other approaches to finding the LCM include:

1. Using a library function like `Math.lcm` (not available in older browsers) or implementing a custom LCM algorithm.
2. Using a different data structure, such as a segment tree, to efficiently compute the LCM.
3. Using parallel processing or multi-threading to speed up the computation.

Keep in mind that these alternatives may introduce additional complexity and dependencies, so it's essential to consider the specific requirements and constraints of your use case before choosing an alternative approach.

Related benchmarks:

Smallest Common Multiple (version: 0)

Comparing performance of: j vs a

Created: 8 years ago by: Guest

Jump to the latest result

j

a

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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