5.7 Write an algorithm that takes as input the pointer to the root of a binary tree and prints the node values of the tree in level order. Level order first prints the root, then all nodes of level 1, then all nodes of level 2, and so on. Hint: Preorder traversals make use of a stack through recursive calls. Consider making use of another data structure to help implement the level- order traversal. 5.7 Write an algorithm that takes as input the pointer to the root of a binary tree and prints the node values of the tree in level order. Level order first prints the root, then all nodes of level 1, then all nodes of level 2, and so on. Hint: Preorder traversals make use of a stack through recursive calls. Consider making use of another data structure to help implement the level- order traversal