Weighted randomization. Objective: You have a list of things with a popularity score and want to get a random item from the list, but you don't want just ANY r

Weighted randomization. Objective: You have a list of things with a popularity score and want to get a random item from the list, but you don't want just ANY random item. You want it to be a generally popular item. How it works: You take a key for the weight, we'll say `popularity` (0-100). And you have maybe 1,000 rows of content, each with said weight. You sum up all the popularities to variable X. You set a random number between 0 and X; call it R. You iterate through your 1,000 rows (Y), and each iteration you subtract Y's `popularity` from your random number, R, and when R <= 0... you use that row. --- Quick Example: https://jsfiddle.net/rL6a01ku/ https://jsfiddle.net/rL6a01ku/ Press "RUN" over and over to see the numbers change, but basically still stay the same.