/
flatten.js
38 lines (36 loc) · 1.19 KB
/
flatten.js
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// CHecking what inside of the arrays
// const assertArraysEqual = function(actual, expected) {
// let result = eqArrays(actual, expected);
// if (result) {
// //`` makes string dynamic parameters and ${} dynamic values
// console.log(`✅Assertion Passed: ${actual} === ${expected}`);
// } else {
// console.log(`❌Assertion Failed: ${actual} !== ${expected}`);
// }
// };
// //What the difference between the array are they equal or not
// const eqArrays = function(arr1, arr2) {
// if (arr1.length !== arr2.length) {
// return false;
// }
// for (let i = 0; i < arr1.length; i++) {
// if (arr1[i] !== arr2[i]) {
// return false;
// }
// }
// return true;
// };
// Create a function flatten which will take in an array containing elements including nested arrays of elements, and return a "flattened" version of the array.
const flatten = function(arr) {
let result = [];
for (let i = 0; i < arr.length; i++) {
if (Array.isArray(arr[i])) {
result = result.concat(flatten(arr[i]));
} else {
result.push(arr[i]);
}
}
return result;
};
module.exports = flatten;
// console.log(flatten([1, 2, [3, 4], 5, [6]])); // => [1, 2, 3, 4, 5, 6]