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In a Red-Black tree, what color can the root node be?

Practice Questions

Q1
In a Red-Black tree, what color can the root node be?
  1. Red
  2. Black
  3. Either Red or Black
  4. None of the above

Questions & Step-by-Step Solutions

In a Red-Black tree, what color can the root node be?
  • Step 1: Understand what a Red-Black tree is. It is a type of binary search tree that has specific properties regarding the color of its nodes.
  • Step 2: Know that each node in a Red-Black tree can be either red or black.
  • Step 3: Learn about the properties of a Red-Black tree. One of the properties states that the root node must always be black.
  • Step 4: Remember that this rule helps maintain balance in the tree, which is important for efficient operations like searching and inserting.
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