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Stack vs Queue
(version: 0)
Comparing performance of:
Push/Pop vs ES6 Spread vs Shift/Unshift
Created:
5 years ago
by:
Registered User
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Tests:
Push/Pop
const n = 10000; const stack = []; for (let i = 0; i < n; i++) { stack.push(i); } while (stack.length > 0) { let x = stack.pop(); }
ES6 Spread
const n = 10000; let stack = []; for (let i = 0; i < n; i++) { stack = [...stack, i]; } let x; while (stack.length > 0) { [x, ...stack] = stack; }
Shift/Unshift
const n = 10000; const queue = []; for (let i = 0; i < n; i++) { queue.unshift(i); } while (queue.length > 0) { let x = queue.shift(); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
Push/Pop
ES6 Spread
Shift/Unshift
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to help you understand what's being tested in the provided benchmark. **Benchmark Overview** The benchmark compares three different approaches for manipulating arrays: traditional push/pop, shift/unshift (using JavaScript's Array.prototype.unshift() and Array.prototype.shift()), and ES6 spread syntax. **Approaches Compared** 1. **Traditional Push/Pop**: This approach uses a stack data structure to store elements. Elements are added to the stack using the `push()` method and removed from the stack using the `pop()` method. 2. **Shift/Unshift**: This approach also uses an array as a stack, but with slightly different methods: `unshift()` adds elements to the beginning of the array, while `shift()` removes elements from the beginning of the array. 3. **ES6 Spread Syntax**: This approach uses the spread operator (`...`) to create a new array by spreading elements from an existing array. **Pros and Cons of Each Approach** 1. **Traditional Push/Pop**: * Pros: Simple, efficient, and widely supported. * Cons: Can be slow for large arrays due to the overhead of pushing and popping elements. 2. **Shift/Unshift**: * Pros: Efficient for large arrays since it only modifies the existing array. * Cons: May have performance issues if the array is very large or if the browser doesn't optimize this method. 3. **ES6 Spread Syntax**: * Pros: Convenient, efficient, and widely supported in modern browsers. * Cons: May be slower for small arrays since it creates a new array. **Library Used (if any)** None of these approaches rely on a specific library. **Special JavaScript Features or Syntax** The ES6 spread syntax (`...`) is a relatively recent feature introduced in ECMAScript 2015. It allows you to create a new array by spreading elements from an existing array. This syntax is widely supported in modern browsers, including Chrome 99. **Other Alternatives** If the goal is to compare performance of different data structures or algorithms for manipulating arrays, other alternatives could include: * Using linked lists instead of arrays * Implementing a custom stack data structure using JavaScript objects or sets * Comparing the performance of different array mutation methods, such as `splice()`, `slice()`, and `concat()` * Evaluating the impact of caching or memoization on array manipulation performance These alternatives can help provide a more comprehensive understanding of the trade-offs involved in manipulating arrays.
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