Efficient method to calculate the rank vector of a list in Python

Question

I\'m looking for an efficient way to calculate the rank vector of a list in Python, similar to R\'s rank function. In a simple list with no ties between the ele

Answer 1

[sorted(l).index(x) for x in l]

sorted(l) will give the sorted version index(x) will give the index in the sorted array

for example :

l = [-1, 3, 2, 0,0]
>>> [sorted(l).index(x) for x in l]
[0, 4, 3, 1, 1]