Benchmark: two sum#2 - MeasureThat.net

Tests:

brute force
var twoSum = function(nums, target) { for(let i=0; i<nums.length; i++) { for(let j=i+1; j<nums.length; j++) { if(nums[i]+nums[j]===target) return [i,j] } } return []; }; twoSum([109,204,33,334,312,77,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,51,551,52,552,53,555,54,554,61,62,63,64,65,66,76,777,768,744,642,311,1,4,4,4,4,4,4,4,4,3,3,3,3,3,1,1,1,1,2,2,2,3,4,5,44,22,33,22,31,32,35,45,65,776,77,56,75,75,78,97,41,212,342,98,99,102,2,7,11,15], 9)
Memo
var twoSum = function(nums, target) { let sol = []; for(let i=0; i<nums.length; i++) { if(sol.length) break; for(let j=i+1; j<nums.length; j++) { if(sol.length) break; if(nums[i]+nums[j]===target) sol = [i,j] } } return sol; } twoSum([109,204,33,334,312,77,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,51,551,52,552,53,555,54,554,61,62,63,64,65,66,76,777,768,744,642,311,1,4,4,4,4,4,4,4,4,3,3,3,3,3,1,1,1,1,2,2,2,3,4,5,44,22,33,22,31,32,35,45,65,776,77,56,75,75,78,97,41,212,342,98,99,102,2,7,11,15], 9)
hash
var twoSum = function (nums, target) { let hashTable = [] let pair = [] let i = 0; let foundPair = false while (i < nums.length) { hashTable[nums[i]] = i i += 1 } i = 0 while (i < nums.length && !foundPair) { let compliment = target - nums [i] if (compliment in hashTable) { if (i !== hashTable[compliment]) { pair.push(i) pair.push(hashTable [compliment]) foundPair = true } } i += 1 } return pair } twoSum([109,204,33,334,312,77,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,51,551,52,552,53,555,54,554,61,62,63,64,65,66,76,777,768,744,642,311,1,4,4,4,4,4,4,4,4,3,3,3,3,3,1,1,1,1,2,2,2,3,4,5,44,22,33,22,31,32,35,45,65,776,77,56,75,75,78,97,41,212,342,98,99,102,2,7,11,15], 9)
innova
const twoSum = function(nums, target) { const comp = {}; for(let i=0; i<nums.length; i++){ if(comp[nums[i]] >=0 ){ return [comp[nums[i]] , i] } comp[target-nums[i]] = i } }; twoSum([109,204,33,334,312,77,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,51,551,52,552,53,555,54,554,61,62,63,64,65,66,76,777,768,744,642,311,1,4,4,4,4,4,4,4,4,3,3,3,3,3,1,1,1,1,2,2,2,3,4,5,44,22,33,22,31,32,35,45,65,776,77,56,75,75,78,97,41,212,342,98,99,102,2,7,11,15], 9)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
brute force
Memo
hash
innova

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what is being tested.

**Benchmark Overview**

The benchmark measures the performance of different algorithms for finding two sum in an array of numbers. The input data is provided in the form of a JSON object, which contains multiple test cases with varying sizes and complexities.

**Test Cases**

There are four test cases:

1. **Hash**: This algorithm uses a hash table to store the elements as it iterates through the array. When it encounters an element that has already been seen before (i.e., its index is present in the hash table), it returns the current index and the previous index of the element.
2. **Innova**: This algorithm also uses a hash-like data structure, but with some differences in implementation details. It has a constant-time look-up and insertion operation.
3. **Brute Force**: This algorithm simply iterates through the array and checks every pair of elements to find a sum equal to the target value. This approach has a time complexity of O(n^2).
4. **Memo**: This algorithm uses memoization to store the results of subproblems (i.e., sums of pairs) as it iterates through the array.

**Performance Metrics**

The benchmark measures the number of executions per second (ExecutionsPerSecond) for each test case. This metric indicates how many times the algorithm can execute in a second, which is a common way to measure performance.

**Observations and Insights**

Based on the latest benchmark results:

* The **Hash** algorithm has the highest execution rate (178838.5625 executions per second), indicating that it is likely to be the fastest algorithm for this problem.
* The **Innova** algorithm has a lower execution rate than the **Hash** algorithm, but still outperforms the **Brute Force** algorithm (103407.6484375 executions per second).
* The **Memo** algorithm has the lowest execution rate among all test cases, indicating that it may be less efficient or have higher overhead compared to other algorithms.

Overall, these results suggest that the **Hash** algorithm is likely to be the winner for this benchmark, followed closely by the **Innova** algorithm.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:107.0) Gecko/20100101 Firefox/107.0

Browser/OS: Firefox 107 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
brute force	136659.4 Ops/sec
Memo	103407.6 Ops/sec
hash	178838.6 Ops/sec
innova	142521.7 Ops/sec

Related benchmarks:

two sum#2 (version: 0)

Comparing performance of: brute force vs Memo vs hash vs innova

Created: one year ago by: Guest

Jump to the latest result

brute force

Memo

hash

innova

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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