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var invertTree = function(root) {const reverseNode = node => {if (node == null) {return null}reverseNode(node.left);reverseNode(node.right);let holdLeft = node.left;node.left = node.right;node.right = holdLeft;return node;}return reverseNode(root);};
const getSearchTerm = delimiter => {let searchTerm = "";for (let i = 1; i < commands.length - 1; i++)searchTerm = searchTerm + commands[i] + delimiter;searchTerm += commands[commands.length - 1];return searchTerm;};
const insertionSort = arr =>arr.reduce((acc, x) => {if (!acc.length) return [x];acc.some((y, j) => {if (x <= y) {acc.splice(j, 0, x);return true;}if (x > y && j === acc.length - 1) {acc.splice(j + 1, 0, x);return true;}return false;});return acc;}, []);insertionSort([6, 3, 4, 1]); // [1, 3, 4, 6]
const shuffle = ([...arr]) => {let m = arr.length;while (m) {const i = Math.floor(Math.random() * m--);[arr[m], arr[i]] = [arr[i], arr[m]];}return arr;};const foo = [1, 2, 3];shuffle(foo); // [2, 3, 1], foo = [1, 2, 3]
const getTimezone = () => Intl.DateTimeFormat().resolvedOptions().timeZone;// ExamplegetTimezone();
// `arr` is an arrayconst clone = arr => arr.slice(0);// Orconst clone = arr => [...arr];// Orconst clone = arr => Array.from(arr);// Orconst clone = arr => arr.map(x => x);// Orconst clone = arr => JSON.parse(JSON.stringify(arr));// Orconst clone = arr => arr.concat([]);