Which Number Is Not like the Others?

Published by Helen Yu in
algorithmsarraysnumbers

Create a function that takes an array of numbers and returns the number that's unique.

Examples

unique([3, 3, 3, 7, 3, 3]) ➞ 7

unique([0, 0, 0.77, 0, 0]) ➞ 0.77

unique([0, 1, 1, 1, 1, 1, 1, 1]) ➞ 0

Notes

Test cases will always have exactly one unique number while all others are the same.

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