Weighted Random Selection - given an array of numbers representing games, write a function to randomly pick a number but it must be weighted towards the numbers at the front of the array and it must all be possible that any number could be picked (just less likely that numbers towards the end will be).
No technical questions at all.
Design an automated lift system algorithm
What is your experience with relational databases?
What data types have you used in redis?
Have you used composite index? Give one example.
Database Concepts, Basic of PHP
Code to a problem and design questions
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