Efficient sort function allowing own test and swap function as parameter

[Alaindevos]

I have a large table consisting of two columns.One with 
words.Another with frequencies. I want to sort them efficiently 
according to the names or frequency.
For this I need an efficient sort function where I can plugin my 
proper test of order, and proper swap. Currently I do it using an 
own written bubble sort that doesn't scale well.