16.2.4. Handling Complex Deletions

Try these first

1. 1.

   What happens when we insert a duplicate value into the search tree?

   Hint

   Think about the rules for maintaining order.

2. 2.

   What signifies a leaf node in a binary tree?

   Hint

   Consider what a tree looks like when it ends.

3. 3.

   What should be done when a duplicate value is inserted?

   • Insert it anyway
   • Do nothing
   • Replace the existing value

   Hint

   Think about the purpose of a search tree.

4. 4.

   True or False: A node can be deleted without considering its children.

   • True
   • False

   Hint

   Reflect on the process of tree modifications.

5. 5.

   Consider a search tree where you insert values 50, 30, 70, 20, 40, 60, and 80. After deletion of 70, explain how to maintain the structure of the tree.

   Hint

   What happens to the parent's and children's links?

6. 6.

   Given a scenario where you delete the root node of a tree that has both left and right children, explain the step-by-step process considering two possible replacements (predecessor and successor).

   Hint

   What balancing techniques can be employed to keep the tree efficient?