3 ms·

To be symmetric, the loops should read like this: for (i = 0; i < n; i++) for (i = n; --i >= 0; ) The second one could also be this: for (i = n - 1; i

To be symmetric, the loops should read like this: for (i = 0; i < n; i++) for (i = n; --i >= 0; ) The second one could also be this: for (i = n - 1; i >= 0; i--) I say this because your backwards loop accesses the inclusive range [0, n] while your forwards range accesses [0, n - 1].

torstenvl 2y ago
for (i = 0; i <= n-1; i++) for (i = n-1; i >= 0; i--)
- trealira 2y ago
  Yeah, that way of writing them definitely makes them look more symmetric. You could also do this, though it's a bit less pretty: for (i = -1; ++i != n; ) for (i = n; --i != -1; )