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What is the level-order traversal of a binary tree?

Practice Questions

Q1
What is the level-order traversal of a binary tree?
  1. Visit nodes from top to bottom, left to right
  2. Visit nodes from bottom to top, right to left
  3. Visit nodes in in-order
  4. Visit nodes in pre-order

Questions & Step-by-Step Solutions

What is the level-order traversal of a binary tree?
  • Step 1: Understand that a binary tree is a structure made up of nodes, where each node can have up to two children (left and right).
  • Step 2: Level-order traversal means visiting each level of the tree one at a time.
  • Step 3: Start at the top level (the root node) and visit it first.
  • Step 4: Move to the next level down and visit all the nodes from left to right.
  • Step 5: Continue this process, moving down each level and visiting all nodes from left to right until you reach the bottom of the tree.
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