fix sort

[jony89]

since the logic depeneds on the values being sorted correctly (arrayA[ai] < arrayB[bi]) and .sort is not stable and even gives a wrong result according to decimal computation( [14,2].sort() = [14,2], so we must at least give the compareFunction for simple cases

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

jony89 seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}