https://www.codewars.com/kata/find-the-unique-number-1/python
There is an array with some numbers. All numbers are equal except for one. Try to find it!
findUniq([ 1, 1, 1, 2, 1, 1 ]) === 2 findUniq([ 0, 0, 0.55, 0, 0 ]) === 0.55 It’s guaranteed that array contains more than 3 numbers.