instructions.md

Instructions

Elyse, magician-to-be, continues her training. She has a deck of cards she wants to manipulate.

To make things easier, she usually only starts with cards numbered 1 to 10, although some of the tricks may involve additional cards.

1. Get the first card

Elyse will summon the first card in the deck without using the array[index] or .shift(). It's just like magic.

const deck = [5, 9, 7, 1, 8];

getFirstCard(deck);
// => 5

2. Get the second card

Elyse performs sleight of hand and summons the second card in the deck without using the array[index].

const deck = [3, 2, 10, 6, 7];

getSecondCard(deck);
// => 2

3. Swap the first two cards

Elyse will make the top two cards of the deck switch places. She doesn't need to call a single function.

const deck = [10, 7, 3, 8, 5];

swapTopTwoCards(deck);
// => [7, 10, 3, 8, 5]

4. Discard the top card

Elyse will separate the deck into two piles. The first pile will contain only the top card of the original deck, while the second pile will contain all the other cards.

const deck = [2, 5, 4, 9, 3];

discardTopCard(deck);
// => [2, [5, 4, 9, 3]]

5. Insert face cards

Elyse will insert a set of face cards (i.e. jack, queen, and king) into her deck such that they become the second, third, and fourth cards, respectively.

const deck = [5, 4, 7, 10];

insertFaceCards(deck);
// => [5, 'jack', 'queen', 'king', 4, 7, 10]