Elyses Analytic Enchantments

10 Points

arrow-functions

array-analysis

Instructions

Elyse, magician-to-be, continues her training. She will be given several stacks of cards that she needs to perform her tricks. To make things a bit easier, she only uses the cards 1 to 10.

In this exercise, use built-in methods to analyse the contents of an array.

1. Find the position of a card

Elyse wants to know the position (index) of a card in the stack.

const card = 2;
getCardPosition([9, 7, 3, 2], card);
// => 3

2. Determine if a card is present

Elyse wants to determine if a card is present in the stack -- in other words, if the stack contains a specific number.

const card = 3;
doesStackIncludeCard([2, 3, 4, 5], card);
// => true

3. Determine if each card is even

Elyse wants to know if every card is even -- in other words, if each number in the stack is an even number.

isEachCardEven([2, 4, 6, 7]);
// => false

4. Check if the stack contains an odd-value card

Elyse wants to know if there is an odd number in the stack.

doesStackIncludeOddCard([3, 2, 6, 4, 8]);
// => true

5. Get the first odd card from the stack

Elyse wants to know the value of the first card that is odd.

getFirstOddCard([4, 2, 8, 7, 9]);
// => 7

6. Determine the position of the first card that is even

Elyse wants to know the position of the first card that is even.

getFirstEvenCardPosition([5, 2, 3, 1]);
// => 1

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