Given a BST and a key k. If k is not present in the BST, Insert a new Node with a value equal to k into the BST. If k is already present in the BST, don't modify the BST. Return the root of the ...

# Given the head of a linked list head, in which each node contains an integer value. # Between every pair of adjacent nodes, insert a new node with a value equal to the greatest common divisor of ...