MasterInKotlin

To convert a binary tree into a sum tree, you can follow these steps: Example : Implementation of the algorithm in Kotlin : The time complexity of the convertToSumTree function is O(n), where n is the number of nodes in the binary tree. This is because the function recursively visits each node in the binary … Read more

To construct a binary tree from its inorder and preorder traversals, we can use the following algorithm: Here’s an implementation of the algorithm in Kotlin: let’s walk through the example of constructing a binary tree from the following inorder and preorder traversals: Inorder: 4, 2, 5, 1, 3 Preorder: 1, 2, 4, 5, 3 Here’s … Read more

A binary tree is considered a sum tree if the value of each node is equal to the sum of the values of its left and right subtrees. To check if a binary tree is a sum tree, we can use a recursive function that checks the sum property for each node. Here’s the algorithm: … Read more

To check if all leaf nodes of a binary tree are at the same level, we need to perform a level order traversal of the tree and keep track of the level of the first leaf node we encounter. Then, we check if all subsequent leaf nodes are at the same level as the first … Read more

Two stacks in one array is a technique that allows us to implement two separate stacks in a single array by dividing the array into two halves and treating each half as a separate stack. In this approach, we maintain two pointers to keep track of the top elements of each stack, and push and … Read more

To reverse a string using a stack, you can follow these steps: Kotlin code to reverse a string using a stack: we use an ArrayDeque as our stack, which we initialize to be empty. We then iterate through the characters of the input string using the forEach function, and push each character onto the stack … Read more