Create a function that takes an array of names and returns an array with the first letter capitalized.

Examples

capitalize(["mavis", "senaida", "letty"]) ➞ ["Mavis", "Senaida", "Letty"]

capitalize(["samuel", "MABELLE", "letitia", "meridith"]) ➞ ["Samuel", "Mabelle", "Letitia", "Meridith"]

capitalize(["Slyvia", "Kristal", "Sharilyn", "Calista"]) ➞ ["Slyvia", "Kristal", "Sharilyn", "Calista"]

Notes

Don't change the order of the original array.
Notice in the second example above, "MABELLE" is returned as "Mabelle".

After writing the solution run npm run capitalize-test to test your solution

Please read the contribution guide before submitting your pull request

drop a comment here before submitting your pull request

source: edabit.com

A set is a collection of unique items. A set can be formed from an array from removing all duplicate items.

[1, 3, 3, 5, 5, 5]
// original array

[1, 3, 5]
// original array transformed into a set

Create a function that transforms an array into a set.

Examples

noDuplicate([1, 3, 3, 5, 5]) ➞ [1, 3, 5]

noDuplicate([4, 4, 4, 4]) ➞ [4]

noDuplicate([5, 7, 8, 9, 10, 15]) ➞ [5, 7, 8, 9, 10, 15]

Notes

Note: For this question, output an array, not a set. These are two distinctly different data structures in Javascript (although they can be converted from one to the other).

Note: After writing the solution run npm run no-duplicate-test

Note: Before submitting the pull request please read the contribution guide.

source: eadabit