Which traversal method is used to get the elements of a BST in non-decreasing order?PreorderInorderPostorderLevel order
Question
Which traversal method is used to get the elements of a BST in non-decreasing order?
- Preorder
- Inorder
- Postorder
- Level order
Solution
The traversal method used to get the elements of a Binary Search Tree (BST) in non-decreasing order is Inorder traversal.
Here are the steps for Inorder traversal:
- Traverse the left subtree, i.e., call Inorder(left-subtree)
- Visit the root.
- Traverse the right subtree, i.e., call Inorder(right-subtree)
In a BST, the left subtree has elements less than the root and the right subtree has elements greater than the root. So, traversing in the order of left subtree -> root -> right subtree gives us the elements in non-decreasing order.
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