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Problems with tag O(h)

153 found, showing 60 to 90

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Find Bottom Left Tree Value ->

Medium, #513, 3 solutions

Find Distance in a Binary Tree ->

Medium, #1740, 2 solutions

Find Elements in a Contaminated Binary Tree ->

Medium, #1261, 2 solutions

Find Largest Value in Each Tree Row ->

Medium, #515, 3 solutions

Find Leaves of Binary Tree ->

Medium, #366, 2 solutions

Flatten Binary Tree to Linked List ->

Medium, #114, 5 solutions

Flatten Deeply Nested Array ->

Medium, #2625, 1 solutions

Flatten List ->

Easy, #22, 1 solutions

Flatten Nested List Iterator ->

Medium, #341, 5 solutions

Flip Binary Tree To Match Preorder Traversal ->

Medium, #971, 3 solutions

Flip Equivalent Binary Trees ->

Medium, #951, 4 solutions

House Robber III ->

Medium, #337, 5 solutions

Identical Binary Tree ->

Easy, #469, 1 solutions

Increasing Order Search Tree ->

Easy, #897, 2 solutions

Inorder Successor in BST II ->

Medium, #510, 2 solutions

Inorder Successor in BST ->

Medium, #285, 4 solutions

Insert into a Binary Search Tree ->

Medium, #701, 2 solutions

Insert Node in a Binary Search Tree ->

Easy, #85, 1 solutions

Insufficient Nodes in Root to Leaf Paths ->

Medium, #1080, 2 solutions

Interval Minimum Number ->

Hard, #205, 1 solutions

Invert Binary Tree ->

Easy, #226, 4 solutions

JSON Deep Equal ->

Medium, #2628, 1 solutions

Largest BST Subtree ->

Medium, #333, 3 solutions

Leaf-Similar Trees ->

Easy, #872, 3 solutions

Height of Special Binary Tree ->

Medium, #2773, 2 solutions

Logical OR of Two Binary Grids Represented as Quad-Trees ->

Medium, #558, 2 solutions

Longest Path With Different Adjacent Characters ->

Hard, #2246, 2 solutions

Longest Univalue Path ->

Medium, #687, 3 solutions

Longest ZigZag Path in a Binary Tree ->

Medium, #1372, 2 solutions

Lowest Common Ancestor of a Binary Search Tree ->

Medium, #235, 5 solutions