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flatten.js
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flatten.js
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// const assertEqual = function(actual, expected) {
// // adds "" before and after actual and expected if they are strings
// // typeof actual === "string" ? actual = `"${actual}"` : null;
// // typeof expected === "string" ? expected = `"${expected}"` : null;
// if (actual === expected) {
// console.log(`✅✅✅ Assertion Passed: ${actual} === ${expected}`);
// } else {
// console.log(`🛑🛑🛑 Assertion Failed: ${actual} !== ${expected}`);
// }
// };
// const eqArrays = function(firstArray, secondArray) {
// let equal = false;
// if (firstArray.length !== secondArray.length) {
// equal = false;
// } else if (firstArray.length === secondArray.length && firstArray.length === 0 && secondArray.length === 0) {
// equal = true;
// } else {
// for (let i = 0; i < firstArray.length; i++) {
// firstArray[i] === secondArray[i] ? equal = true : equal = false;
// }
// }
// return equal;
// };
const flatten = function(arrayList) {
let flattenList = [];
for (const element of arrayList) {
Array.isArray(element) ? flattenList.push(...flatten(element)) : flattenList.push(element);
}
return flattenList;
};
module.exports = flatten;