Find_the_unique_number.md

CodeWars Python Solutions

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Find the unique number

There is an array with some numbers. All numbers are equal except for one. Try to find it!

find_uniq([ 1, 1, 1, 2, 1, 1 ]) == 2
find_uniq([ 0, 0, 0.55, 0, 0 ]) == 0.55

It’s guaranteed that array contains at least 3 numbers.

The tests contain some very huge arrays, so think about performance.

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Given Code

def find_uniq(arr):
    # your code here

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Solution 1

def find_uniq(arr):
    for char in set(arr):
        if arr.count(char) == 1:
            return char

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See on CodeWars.com