codility-solutions-js Codility Lessons Solutions in JavaScript Other guys' solutions I compare with: https://gist.github.com/lalkmim/e04845eb9d1c5936622a https://github.com/juliandavidmr/codility_exercises Lesson 2 - Arrays OddOccurrencesInArray for https://app.codility.com/demo/results/trainingCU8K3K-B5H/ reduce https://app.codility.com/demo/results/training7B4V3D-G2Q/ sort+for https://app.codility.com/demo/results/trainingYE3JYG-QV4/ bitwise XOR