4 ms·

It's the number of children each node can have

• adrianmonk 6y ago
  Maybe they're asking why the letter "d". That is, why "d-ary" instead of "n-ary" or "k-ary".
  • barbecue_sauce 6y ago
    Yes, that was my intent. Why the choice of the letter "d".
    • SamReidHughes 6y ago
      The letter “n” is already used for the heap size, and “k” is typically a number <= n.