Visit a rooted tree's root before recursively visiting its child subtrees in their specified order. For a binary tree, the order is root, left subtree, right subtree. Unlike inorder traversal, this interpretation stores an internal node's label before either child's labels.

Ancestors (6)

  1. Depth-first traversal of a tree
  2. Tree (graph theory)
  3. Combinatorics
  4. Area of mathematics
  5. Mathematics
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