// Complete the following functions.

const nFibonacci = (n) => {

// fibonacci sequence: 1 2 3 5 8 13 ...

// return the nth number in the sequence

if (n <= 1) return 1;

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 */

const checkMatchingLeaves = (obj) => {

// return true if every property on `obj` is the same

// otherwise return false

const checkBox = [];

function checkNested(subObj) {

for (let i = 0; i < Object.keys(subObj).length; i++) {

if (typeof subObj[Object.keys(subObj)[i]] !== 'object') checkBox.push(subObj[Object.keys(subObj)[i]]);

if (typeof subObj[Object.keys(subObj)[i]] === 'object') checkNested(subObj[Object.keys(subObj)[i]]);

}

return checkBox.every(allkeys => allkeys === checkBox[0]);

}

return checkNested(obj);

};

/* eslint-enable no-unused-vars */

module.exports = {

nFibonacci,

nFactorial,

checkMatchingLeaves

};