How to Find out the Most Frequent Subtree Sum using Depth First Search Algorithm?
Given the root of a tree, you are asked to find the most frequent subtree sum. The subtree sum of a node is defined as the sum of all …
Tag: tree algorithms
How to Trim a Binary Search Tree using Depth First Search Algorithm (Recursion)?
Given a binary search tree and the lowest and highest boundaries as L and R, trim the tree so that all its elements lies in (R >= L). You …
How to Flip Equivalent Binary Trees?
For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is …
How to Turn a Binary Search Tree into a Increasing Order Search Tree?
Given a tree, rearrange the tree in in-order so that the leftmost node in the tree is now the root of the tree, and every node has no left …
Sum Up Tree/Sub-Tree Values – Compute Employee Importance via DFS or BFS
You are given a data structu re of employee information, which includes the employee’s unique id, his importance value and his direct subordinates’ id. For example, employee 1 is …