[SugarCube] Sorting Arrays by Values in the Array

So I have an array, let's say it's like:

<<set $array = [ [ "Jo" , 3 ] , [ "Sam" , 4 ] , [ "Alex" , 2  ] ] >>

What is the best way to sort that array by the values in the second index of each item? So I'll get "2, 0, 1" or "Alex, Jo, Sam" or similar?