- A leaf, which is the end (has no children)
- A branch, which may have leaves or more branches (has children)... and because a branch can have more branches, this is recursion, so we abstract to a 3rd type of part:
- A node, which could be a branch or a leaf...
function int getNumLeaves(Node node):
foreach childNode in node:
if childNode.IsLeaf(): leafCount++
else: return getNumLeaves(childNode) // NOT a leaf -> check this branch's children
print getNumLeaves(tree.stem); // (start with the outermost 'node')
From the article itself, the Pyramids are only 12,000 years old. Every other Ancient Wonder has been destroyed.
Essentially there’s a Major Cataclysm about every 10,000 years, and a ‘Minor’ one about every 5000 years (Burkle Crater impact being the most recent).
How do you assume any parts of the Hoover Dam would be intact or even visible “hundreds of thousands of years from now”?