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Test array concat
(version: 1)
Comparing performance of:
copy vs concat vs in place
Created:
one year ago
by:
Guest
Go to the latest result
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
/*your preparation JavaScript code goes here To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/ async function globalMeasureThatScriptPrepareFunction() { // This function is optional, feel free to remove it. // await someThing(); }
Tests:
copy
var getConcatenation = function(nums) { let ans = []; for (i = 0; i < nums.length; i++) { ans[i] = nums[i]; ans[i + nums.length] = nums[i]; } return ans; }; for (let i = 0; i < 100000; i++) { getConcatenation([1,2,3,4,5]); }
concat
var getConcatenation = function (nums) { return nums.concat(nums); }; for (let i = 0; i < 100000; i++) { getConcatenation([1,2,3,4,5]); }
in place
var getConcatenation = function(nums) { const len = nums.length; for (i = 0; i < len; i++) { nums[i + len] = nums[i]; } return nums; }; for (let i = 0; i < 100000; i++) { getConcatenation([1,2,3,4,5]); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
copy
concat
in place
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser/OS:
Chrome 129 on Mac OS X 10.15.7
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=575930" width="100%" height="500px"></iframe>
concat
169/s
in place
68/s
copy
63/s
View exact numbers
Test name
Executions per second
✓
concat
169 Ops/sec
in place
68 Ops/sec
copy
63 Ops/sec
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