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Problems with tag O(h)

153 found, showing 30 to 60

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Construct Binary Tree from String ->

Medium, #536, 3 solutions

Construct Quad Tree ->

Medium, #427, 2 solutions

Subtree of Another Tree ->

Medium, #606, 5 solutions

Convert Binary Search Tree to Doubly Linked List ->

Medium, #378, 2 solutions

Convert Binary Search Tree to Sorted Doubly Linked List ->

Medium, #426, 2 solutions

Convert BST to Greater Tree ->

Medium, #538, 4 solutions

Convert JSON String to Object ->

Hard, #2759, 1 solutions

Convert Object to JSON String ->

Medium, #2633, 1 solutions

Count Good Nodes in Binary Tree ->

Medium, #1448, 2 solutions

Count Nodes Equal to Average of Subtree ->

Medium, #2265, 2 solutions

Count Nodes Equal to Sum of Descendants ->

Medium, #1973, 2 solutions

Count Number of Possible Root Nodes ->

Hard, #2581, 2 solutions

Count of Smaller Number ->

Medium, #248, 1 solutions

Count Univalue Subtrees ->

Medium, #250, 2 solutions

Cousins in Binary Tree ->

Easy, #993, 3 solutions

Deep Merge of Two Objects ->

Medium, #2755, 1 solutions

Deep Object Filter ->

Medium, #2823, 1 solutions

Delete Leaves With a Given Value ->

Medium, #1325, 2 solutions

Delete Node in a BST ->

Medium, #450, 3 solutions

Design an Expression Tree With Evaluate Function ->

Medium, #1628, 2 solutions

Diameter of Binary Tree ->

Easy, #543, 5 solutions

Diameter of N-Ary Tree ->

Medium, #1522, 2 solutions

Differences Between Two Objects ->

Medium, #2700, 1 solutions

Distribute Coins in Binary Tree ->

Medium, #979, 3 solutions

Employee Importance ->

Medium, #690, 2 solutions

Encode N-ary Tree to Binary Tree ->

Hard, #431, 2 solutions

Evaluate Boolean Binary Tree ->

Easy, #2331, 2 solutions

Extract Kth Character From The Rope Tree ->

Easy, #2689, 2 solutions

Find a Corresponding Node of a Binary Tree in a Clone of That Tree ->

Easy, #1379, 2 solutions

Find All The Lonely Nodes ->

Easy, #1469, 2 solutions