removing-elements.md

Removing Elements ^{8 Kyu}

^{LINK TO THE KATA - LISTS ARRAYS FUNDAMENTALS}

Description

Take an array and remove every second element from the array. Always keep the first element and start removing with the next element.

Example:

["Keep", "Remove", "Keep", "Remove", "Keep", ...] --> ["Keep", "Keep", "Keep", ...]

None of the arrays will be empty, so you don't have to worry about that!

Solution

const removeEveryOther = arr => {
  return arr.filter((element, index) => index % 2 === 0)
}