Hopper - Frontend Software Engineer
Level: Mid level
Education: Bachelor’s degree
Years of Experience: 2
Questions Asked:
Determine whether it is possible to form pairs from the given array.
For example:
[3,5,5,3] → True. [3,3] and [5,5] are pairs.
[3,3,5,5,5] → False. An extra 5 will not be paired with anything.