Add note to binary-tree exercise about duplicate values #2790
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This is because it isn't simply a binary tree, it's a binary search tree (see #2732). I think saying so would make this clearer, though it doesn't hurt to also explicitly mention that values are only present at most once. |
djmitche
approved these changes
Jun 26, 2025
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Just a small note to clarify a minor point of confusion with the exercise.