all combinations of k elements out of n

Question

Can somebody provide me a link or pseudocode of a function for finding all combinations of k elements out of n? possibly in STL. I don\'t need to compute n choose k, I need

Answer 1

http://howardhinnant.github.io/combinations.html

Search for "for_each_combination". If you find something faster, please let me know. Unlike other algorithms I often see, this one doesn't require the element type to be LessThanComparable.