Image credit:https://leetcode.com/articles/binary-search-tree-iterator/ In order traversal using stack In order to reduce memory from O(N) to O(lgN), aka O(h) where h is the height of the tree, an alternative is return the next() inline while we are performing the recursion. The t...
tree.root = deleteRecursively(tree.root, 4); tree.root = deleteRecursively(tree.root, 20); printInorderTraversal(tree.root); The output is:2 5 8 10 15 24 25Let’s do the same iteratively. public static TreeNode deleteNodeIteratively(TreeNode root, int value) { TreeNode parent = null, ...
You may assume thatnext()call will always be valid, that is, there will be at least a next smallest number in the BST whennext()is called. 因为是Binary Search Tree, 所以要用inorder travesal,所以可以在初始化的时候将tree 转变为stack,并且用一个指针来指向现在的node所在的位置,如果超过stack,...
binary search tree is also a binary tree that is organized and has structurally organized nodes. every subtree must be a part of the concerned structure. performance of operations you can perform operations like insertion, deletion, and traversal using the binary tree. since these are sorted ...
Binary Search II Binary Search III Binary Search IV Binary Search Problem Binary Substrings Binary Tree All Lesser Binary Tree Any Greater Binary Tree Find Binary Tree Height Binary Tree Inorder Traversal Binary Tree Is Leaf Binary Tree Level Order Traversal Binary Tree Max Bina...
0987-Vertical-Order-Traversal-of-a-Binary-Tree 0988-Smallest-String-Starting-From-Leaf 0989-Add-to-Array-Form-of-Integer 0990-Satisfiability-of-Equality-Equations 0991-Broken-Calculator 0992-Subarrays-with-K-Different-Integers 0993-Cousins-in-Binary-Tree 0994-Rotting-Oranges 0995-Minimum-Number-of-...