Чисті функції
let array = [1, 2, 3, 4, 5];
console.log(array); // [1, 2, 3, 4, 5]
const multiplication = (arr, value) => {
for (let i = 0; i < arr.length; i += 1) {
arr[i] = arr[i] * value;
}
};
multiplication(array, 2);
console.log(array); // [2, 4, 6, 8, 10]

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