Mar 26, 2017 · In this week we will be solving a interview question on trees. Checking if is tree balanced requires other concepts like various varieties of binary trees and learning hoe to find height of the tree.
Now, the key thing is that when you're analyzing binary search trees, the shape of the tree is a property of permutations, not trees. Our input model is a random permutation. That's N things in arbitrary order, N factorial possibilities.
题目Given an array where elements are sorted in ascending order, convert it to a height balanced BST.For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the...
Given the root of a binary tree, return its maximum depth. A binary tree's maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. ... Balanced Binary Tree. Easy. Minimum Depth of Binary Tree. Easy. Maximum Depth of N-ary Tree.
Nov 05, 2015 · Method 1: perform a simple inorder traversal and keep the previous value of the node. If the current node is smaller than the previous node then it is not a binary search tree. You use constant additional space (for the previous value) apart from the recursion stack. Method 2: Implement a recursive check method.
As seen above an almost complete binary tree can be stored in an array. [rapid_quiz question=”Every almost complete binary tree is also ‘Complete Binary tree'” answer=”True” options=”True|False” notes=””] We have earlier written code to check is a given tree is an Almost complete binary tree or not.
Given asortedinteger array, remove duplicate elements.For each group of elements with the same value keep at most two of them. Do this in-place, using the left side of the original array and maintain the relative order of the elements of the array.
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1.