speed

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Testing in
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recursiya
function getSum(arr) {
	let sum = arr.pop();
	
	if (arr.length) {
		sum += getSum(arr);
	}
	
	return sum || 0;
}

console.log(getSum([1, 2, 3]));
ready
cycle
function getSum(arr) {
	
	let sum = 0;
	
	while(arr.length) {
	 sum += arr.pop();
	}
	
	return sum;
}

console.log(getSum([1, 2, 3]));
ready

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