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Array.reduce
(version: 0)
A test summing 1000 random numbers, 1 - 10000
Comparing performance of:
reduce vs for loop
Created:
4 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
// Create an array of 1000 random intergers between 1 and 10000 var arrRandom = []; for(var intCtr=0; intCtr<1000; intCtr++) { arrRandom.push(Math.floor(Math.random() * Math.floor(10000))); }
Tests:
reduce
arrRandom.reduce((acc, v) => (acc.push(v), acc), [])
for loop
arrRandom.reduce((acc, v) => ([...acc, v]), [])
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
reduce
for loop
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON data and explain what's being tested in each benchmark. **Overall Purpose:** The `MeasureThat.net` website is used to compare the performance of different approaches to perform a specific task, in this case, summing up 1000 random numbers. The goal is to identify which approach is the most efficient. **Benchmark Definition JSON:** * **Array.reduce**: This benchmark tests the use of the `reduce()` method with an array as its argument. The `reduce()` method applies a function to each element in the array and reduces it to a single output value. + Script Preparation Code: Creates an array of 1000 random integers between 1 and 10,000 using a `for` loop and `Math.random()`. + Html Preparation Code: None provided. * **For Loop**: This benchmark tests the use of a traditional `for` loop to iterate over the array and perform the sum. + Script Preparation Code: Creates an array of 1000 random integers between 1 and 10,000 using a `for` loop and `Math.random()`. + Html Preparation Code: None provided. **Options Compared:** * **Array.reduce vs For Loop**: The two approaches are compared in terms of performance. * **Accumulator Pattern vs Simple Accumulation**: Both approaches use an accumulator to store the sum. However, the `reduce()` method uses a more concise and expressive way to accumulate values using the `(acc, v) => (acc.push(v), acc)` syntax. **Pros and Cons:** * **Array.reduce**: + Pros: - More concise and expressive - Easier to read and understand + Cons: - May have slower performance due to overhead of method invocation and array manipulation * **For Loop**: + Pros: - Can be more efficient in some cases, especially when dealing with large arrays - More control over the iteration process + Cons: - Less concise and expressive than `reduce()` - May lead to more errors due to manual indexing and array manipulation **Library/Tool Used:** None mentioned in this specific benchmark. However, if you were to use additional libraries or tools, they would likely be used for: * Array manipulation (e.g., `lodash` or `Array.prototype.reduce()`) * HTML preparation (e.g., jQuery or a custom solution) **Special JS Feature/Syntax:** The `reduce()` method uses the accumulator pattern and syntax `(acc, v) => (acc.push(v), acc)` to accumulate values. This is an advanced JavaScript concept that requires understanding of functional programming principles. **Other Alternatives:** * Other approaches for summing up an array include: + Using a recursive function + Employing a different data structure, such as a queue or deque + Utilizing a specialized library or framework (e.g., NumJS)
Related benchmarks:
reduce vs for loop
reduce vs for loop
Array.reduce vs for loops vs Array.forEach
for of vs Array.reduce vs Array.forEach vs for i for summing and array of integers
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