Depth First Search Algorithm to Compute the Smallest String Starting From Leaf
Given the root of a binary tree, each node has a value from 0 to 25 representing the letters ‘a’ to ‘z’: a value of 0 represents ‘a’, a …
Tag: depth first search algorithm
How many different ways can £2 be made using any number of coins? (Depth First Search and Dynamic Programming)
In the United Kingdom the currency is made up of pound (£) and pence (p). There are eight coins in general circulation: 1p, 2p, 5p, 10p, 20p, 50p, £1 …
Depth First Search and Breadth First Search Algorithm to Open the Doors to the Rooms with Keys
There are N rooms and you start in room 0. Each room has a distinct number in 0, 1, 2, …, N-1, and each room may have some keys …
Depth First Search Algorithm with Hash Set to Find Elements in a Contaminated Binary Tree
Given a binary tree with the following rules: root.val == 0 If treeNode.val == x and treeNode.left != null, then treeNode.left.val == 2 * x + 1 If treeNode.val …
Using Depth First Search Algorithm to Delete Tree Nodes with Sum Zero in the Sub Tree
A tree rooted at node 0 is given as follows: The number of nodes is nodes; The value of the i-th node is value; The parent of the i-th …