merge sorted arrays

Benchmark created on

Setup

const ARR_LEN = 1000;
const arr1 = [...Array(ARR_LEN)].map((_, i) => i * 3);
const arr2 = [...Array(ARR_LEN)].map((_, i) => i * 7);

Test runner

Ready to run.

Testing in
TestOps/sec
es6
const merged = [...arr1, ...arr2].sort((a, b) => a - b);
ready
for
const merged = Array(arr1.length + arr2.length);
let i1 = 0, i2 = 0;
for (let j = 0; j < merged.length; j++) {
	if (arr1[i1] < arr2[i2]) {
		merged[j] = arr1[i1];
		i1++;
	}
	else {
		merged[j] = arr2[i2];
		i2++;
	}
}
ready
for optimized
const merged = Array(arr1.length + arr2.length);
let i1 = 0, i2 = 0;
for (let j = 0; j < merged.length; j++) {
		merged[j] = arr1[i1] < arr2[i2] ? arr1[i1++] : arr2[i2++];
}
ready

Revisions

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