Off the top of my head I can only think of the one where you need to merge two linked lists in sorted order. It seems like most fall into being iterative or rec

Off the top of my head I can only think of the one where you need to merge two linked lists in sorted order. It seems like most fall into being iterative or recursive. The iterative solutions tend to involve mutations. Doing them functionally seems like a bit of extra overhead. I'd love to be wrong about that because FP seems to be mathematically superior