friend-or-foe

Friend or Foe?

• Completed at: 2023-07-10T21:13:07.408Z

• Completed languages: javascript

• Tags: Fundamentals

• Rank: 7 kyu

Description

Make a program that filters a list of strings and returns a list with only your friends name in it.

If a name has exactly 4 letters in it, you can be sure that it has to be a friend of yours! Otherwise, you can be sure he's not...

Ex: Input = ["Ryan", "Kieran", "Jason", "Yous"], Output = ["Ryan", "Yous"]

Ex: Input = `{ "Ryan" "Kieran" "Jason" "Yous" }`, Output = `{ "Ryan" "Yous" }`

i.e.

friend ["Ryan", "Kieran", "Mark"] `shouldBe` ["Ryan", "Mark"]

{ "Ryan" "Kieran" "Mark" } friend -> { "Ryan" "Mark" }

Note: keep the original order of the names in the output.