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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | 21x 16x 16x 8x 8x 8x 8x 8x 39x 126x 21x 16x 6x 11x | /**
* Return a shallow copy of an array with two items swapped.
*
* @param {Array} array - The source array
* @param {Number} leftIndex - Index of the first item
* @param {Number} rightIndex - Index of the second item
* @returns {Array} new array with the left and right items swapped
*/
export const swapArrayItems = (array, leftIndex = 0, rightIndex = 0) => {
const copy = array.slice();
if (leftIndex >= array.length || leftIndex < 0 || rightIndex >= array.length || rightIndex < 0) {
return copy;
}
const temp = copy[leftIndex];
copy[leftIndex] = copy[rightIndex];
copy[rightIndex] = temp;
return copy;
};
/**
* Return an array with all duplicate items from the given array
*
* @param {Array} array - The source array
* @returns {Array} new array with all duplicate items
*/
export const getDuplicateItemsFromArray = (array) => [
...new Set(array.filter((value, index) => array.indexOf(value) !== index)),
];
/**
* Toggles the presence of an item in a given array.
* Use pass by reference when toggling non-primivive types.
*
* @param {Array} array - The array to use
* @param {Any} item - The array item to toggle
* @returns {Array} new array with toggled item
*/
export const toggleArrayItem = (array, value) => {
if (array.includes(value)) {
return array.filter((item) => item !== value);
}
return [...array, value];
};
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