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

Practice Questions

Q1
What is the result of a level-order traversal of a binary tree?
  1. Nodes are visited from top to bottom and left to right
  2. Nodes are visited from bottom to top and right to left
  3. Nodes are visited in sorted order
  4. Nodes are visited in reverse order

Questions & Step-by-Step Solutions

What is the result of a level-order traversal of a binary tree?
  • Step 1: Start at the root of the binary tree.
  • Step 2: Visit the root node and record its value.
  • Step 3: Move to the next level down, which contains the children of the root.
  • Step 4: Visit the left child of the root and record its value.
  • Step 5: Visit the right child of the root and record its value.
  • Step 6: Move to the next level down, which contains the children of the nodes you just visited.
  • Step 7: Repeat the process: visit all nodes at the current level from left to right.
  • Step 8: Continue this process until all levels of the tree have been visited.
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