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83 lines (72 loc) · 2.11 KB
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// Complete the following functions.
const nFibonacci = (n) => {
// fibonacci sequence: 1 1 2 3 5 8 13 ...
// return the nth number in the sequence
if (n === 0 || n === 1) return n;
return nFibonacci(n - 1) + nFibonacci(n - 2);
};
const nFactorial = (n) => {
// factorial example: !5 = 5 * 4 * 3 * 2 * 1
// return the factorial of `n`
if (n === 0) {
return 1;
}
return n * nFactorial(n - 1);
};
/* Extra Credit */
// return true if every property on `obj` is the same
// otherwise return false
// values in one object are the same
// compare the value
// find the same values and return true or false
// how do I get to the value on the property of the object???
// const checkMatchingLeaves = (obj) => {
const checkMatchingLeaves = (obj) => {
let flag = true;
let value;
const compare = (object) => {
Object.keys(object).forEach((key) => {
if (value === undefined && typeof object[key] !== 'object') {
value = object[key];
return;
}
if (typeof object[key] === 'object') return compare(object[key]);
if (object[key] !== value) {
flag = false;
return;
}
return;
});
};
compare(obj);
return flag;
};
const objectCompare = { notSame: 2, stillDifferent: 3 };
// const checkMatchingLeaves = (obj) => {
// let value;
// let allMatch = true;
// const checkLeaves = (object) => {
// Object.keys(object).forEach((key) => {
// if (value === undefined && typeof object[key] !== 'object') { // will only ever run once
// value = object[key];
// return; // breaks out of forEach
// }
// if (typeof object[key] === 'object') return checkLeaves(object[key]);
// if (object[key] !== value) {
// allMatch = false;
// return; // breaks out of forEach
// }
// return; // breaks out of forEach
// });
// };
// checkLeaves(obj);
// return allMatch;
// };
// const objectCompare = { notSame: 2, stillDifferent: 3 };
// console.log(checkMatchingLeaves(1));
/* eslint-enable no-unused-vars */
module.exports = {
nFibonacci,
nFactorial,
checkMatchingLeaves,
};