Multi percentiles

[oneandonlyonebutyou]

How am I efficiently get multiple percentiles

a = [1,2,3,4,....]
//getting 50,60,70 percentiles
percentile([50,60,70], a)

Since my data is very large, I wonder what would you suggest?
Thank you

[d4rkr00t]

Unfortunately percentile always sorts an array, but this sounds like a good feature request. I'll try and have a look at implementing this, sometime this week.