What is the time complexity for searching an element in a Red-Black tree?

Practice Questions

Q1
What is the time complexity for searching an element in a Red-Black tree?
  1. O(n)
  2. O(log n)
  3. O(n log n)
  4. O(1)

Questions & Step-by-Step Solutions

What is the time complexity for searching an element in a Red-Black tree?
  • Step 1: Understand what a Red-Black tree is. It is a type of binary search tree that keeps itself balanced.
  • Step 2: Know that in a binary search tree, searching for an element involves comparing the target value with the values in the nodes.
  • Step 3: Realize that a balanced tree means the height of the tree is kept low, which helps in searching quickly.
  • Step 4: In a Red-Black tree, the height is approximately log(n), where n is the number of nodes in the tree.
  • Step 5: Since searching involves traversing from the root to a leaf, the time taken is proportional to the height of the tree.
  • Step 6: Therefore, searching for an element in a Red-Black tree takes O(log n) time.
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