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Problems with tag O(h)

153 found, showing 1 to 30

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Add One Row to Tree ->

Medium, #623, 3 solutions

All Elements in Two Binary Search Trees ->

Medium, #1305, 2 solutions

Amount of Time for Binary Tree to Be Infected ->

Medium, #2385, 2 solutions

Average of Levels in Binary Tree ->

Easy, #637, 3 solutions

Balance a Binary Search Tree ->

Medium, #1382, 2 solutions

Balanced Binary Tree ->

Easy, #110, 4 solutions

Binary Search Tree Iterator II ->

Medium, #1586, 2 solutions

Binary Search Tree Iterator ->

Medium, #173, 7 solutions

Binary Search Tree to Greater Sum Tree ->

Medium, #1038, 2 solutions

Binary Tree Cameras ->

Hard, #968, 2 solutions

Binary Tree Coloring Game ->

Medium, #1145, 2 solutions

Binary Tree Longest Consecutive Sequence II ->

Medium, #549, 3 solutions

Binary Tree Longest Consecutive Sequence ->

Medium, #298, 2 solutions

Binary Tree Maximum Path Sum ->

Hard, #124, 6 solutions

Binary Tree Path Sum ->

Easy, #376, 1 solutions

Binary Tree Paths ->

Easy, #257, 5 solutions

Binary Tree Pruning ->

Medium, #814, 2 solutions

Binary Tree Right Side View ->

Medium, #199, 3 solutions

Binary Tree Serialization ->

Medium, #7, 1 solutions

Boundary of Binary Tree ->

Medium, #545, 3 solutions

Change the Root of a Binary Tree ->

Medium, #1666, 2 solutions

Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree ->

Medium, #1430, 2 solutions

Clone Binary Tree With Random Pointer ->

Medium, #1485, 2 solutions

Clone Binary Tree ->

Easy, #375, 1 solutions

Clone N-ary Tree ->

Medium, #1490, 2 solutions

Closest Binary Search Tree Value II ->

Hard, #272, 2 solutions

Closest Binary Search Tree Value ->

Easy, #270, 3 solutions

Compact Object ->

Medium, #2705, 1 solutions

Construct Binary Search Tree from Preorder Traversal ->

Medium, #1008, 2 solutions

Construct Binary Tree from Preorder and Postorder Traversal ->

Medium, #889, 2 solutions