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it is a useful tool for indicating the logical properties of data type it is a collection of values amp a set of operations on those values
in the earlier unit we have discussed about the arrays arrays are data structures of fixed size insertion amp deletion involves reshuffling of array
for avl trees the deletion algorithm is a little more complicated as there are various extra steps involved in the deletion of node if the node is
initially nodes are inserted in an avl tree in the same manner as an ordinary binary search treethough the insertion algorithm for any avl tree
a binary search tree is binary tree which is either empty or a node having a key value left child amp right childby analyzing the above definition we
linked list representations contain great advantages of flexibility on the contiguous representation of data structures however they contain few
tree is a widely used data structure employed for representing several problems we studied tree like a special case of acyclic graph though rooted
for preorder traversal in the worst case the stack will rise to size n2 where n refer to number of nodes in the tree another method of traversing
as we have seen as the traversal mechanisms were intrinsically recursive the implementation was also easy through a recursive procedure though in the
postorder traversal of a binary treestruct nodestruct node leftint value can take any data type struct node rightpostorderstruct
preorder traversal of a binary treestruct nodestruct node leftint value can take any data type struct node right preorderstruct
there are three typical ways of recursively traversing a binary tree in each of these the left sub-trees amp right sub-trees are visited recursively
we have discussed already about three tree traversal methods in the earlier section on general tree the similar three different ways to do the
binary tree creationstruct nodestruct node leftint valuestruct node rightcreatetree struct node curr struct node new ifnew-gtvalue lt
full binary trees a binary tree of height h that had 2h -1 elements is called a full binary treecomplete binary trees a binary tree whereby if the
a binary tree is a special tree where each non-leaf node can have atmost two child nodes most important types of trees which are used to model yesno
there are three kinds of tree traversals namely postorder preorder and inorderpreorder traversal each of nodes is visited before its children are
tree is dynamic data structures trees can expand amp contract as the program executes and are implemented via pointers a tree deallocates memory
this is a k-ary position tree wherein all levels are filled from left to right there are a number of specialized treesthey are binary trees avl-trees
have you ever thought about the handling of our files in operating system why do we contain a hierarchical file system how do files saved amp deleted
accessibility testing for web sites is a service that can give much more than the standard point-by-point testing methods of most automated services
in this unit we described about the data structure queue it had two ends one is front from where the elements can be removed and the other is rear
double ended queues are implemented along doubly linked listsa doubly link list can traverse in both of the directions as it contain two pointers
if a dequeue is implemented via arrays then this will suffer with the similar problems which a linear queue had suffered program 8 gives the array
dequeue a double ended queue is an abstract data type alike to queue where insertion and deletion of elements are allowed at both of the ends like a