Why Hashtable doesn't allow null key/value while Hashmap does.In this post we will learn why Hashtable doesn't allow null key and null value while HashMap does.How Hashtable and HashMap compute bucket Index.
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Create Linked Lists of all the nodes at each depth in a binary tree.
Create Linked Lists of all the nodes at each depth in a binary tree.Creating linked list of Nodes at same level in a Binary tree is same as printing nodes at each level of a Binary tree with only difference is to collect the Nodes in a list for each...
Find Inorder successor of a Node in BST
Find Inorder successor of a Node in BST.Inorder traversal of a Binary Tree reads a Left most element first then a middle or root element and at last the right most element, so when we say successor of a Node, you have to return the next element of the...
