Top "Ackermann" questions

A well-defined total function which is computable but not primitive recursive.

The Ackermann Function and Recursion

I've tried to write the recursive Ackermann function in Java. But I think I've gone very very wrong somewhere! Could …

java function recursion if-statement ackermann
Time Complexity of ackermann function

Does anybody know the time complexity to compute the ackermann function ack(m,n) in big-O notation or to which …

complexity-theory time-complexity ackermann