In a Red-Black tree, what property must be maintained after every insertion?

Practice Questions

Q1
In a Red-Black tree, what property must be maintained after every insertion?
  1. The tree must be complete.
  2. The tree must be balanced.
  3. The root must always be black.
  4. All leaves must be red.

Questions & Step-by-Step Solutions

In a Red-Black tree, what property must be maintained after every insertion?
  • Step 1: Understand that a Red-Black tree is a type of binary search tree with specific properties.
  • Step 2: Know that one of the key properties of a Red-Black tree is that the root node must always be black.
  • Step 3: Remember that this property helps maintain balance in the tree after every insertion.
  • Step 4: After inserting a new node, check if the root is black. If it is not, change it to black.
  • Step 5: Ensure that all other Red-Black tree properties are also maintained after the insertion.
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