Set a capacity of array

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Setup

const size = 500;

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Testing in
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Set a capacity of array
const arr = Array(size);
for(let i=0; i<size; i++) {
	arr.push(i);
}
ready
Set a normal array
const arr = [];
for(let i=0; i<size; i++) {
	arr.push(i);
}
ready

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