lect13
... • We won’t test you on the details of generics, interfaces, etc. in Java › But you should know the basic ideas ...
... • We won’t test you on the details of generics, interfaces, etc. in Java › But you should know the basic ideas ...
ppt
... Representing a Heap For a node at position i, its left child is at position 2i+1 and its right child is at position 2i+2, and its parent is (i-1)/2. For example, the node for element 39 is at position 4, so its left child (element 14) is at 9 (2*4+1), its right child (element 33) is at 10 (2*4+2), ...
... Representing a Heap For a node at position i, its left child is at position 2i+1 and its right child is at position 2i+2, and its parent is (i-1)/2. For example, the node for element 39 is at position 4, so its left child (element 14) is at 9 (2*4+1), its right child (element 33) is at 10 (2*4+2), ...
Randomized Binary Search Trees
... A randomized treap is a treap in which the priorities are independently and uniformly distributed continuous random variables. That means that whenever we insert a new search key into the treap, we generate a random real number between (say) 0 and 1 and use that number as the priority of the new nod ...
... A randomized treap is a treap in which the priorities are independently and uniformly distributed continuous random variables. That means that whenever we insert a new search key into the treap, we generate a random real number between (say) 0 and 1 and use that number as the priority of the new nod ...
queue - WSU EECS - Washington State University
... other customers enter the line only at the end and wait to be serviced. Queue nodes are removed only from the head of the queue and are inserted only at the tail of the queue. For this reason, a queue is referred to as a first-in, first-out (FIFO) data structure. The insert and remove operations are ...
... other customers enter the line only at the end and wait to be serviced. Queue nodes are removed only from the head of the queue and are inserted only at the tail of the queue. For this reason, a queue is referred to as a first-in, first-out (FIFO) data structure. The insert and remove operations are ...
Exam 1
... popped from stack A and inserted into a queue B until all characters from stack A have been popped (and subsequently been inserted into queue B). Finally, all characters are retrieved from queue B. The result will spell 'treb'. To implement a List data structure, you must use an array. Of the da ...
... popped from stack A and inserted into a queue B until all characters from stack A have been popped (and subsequently been inserted into queue B). Finally, all characters are retrieved from queue B. The result will spell 'treb'. To implement a List data structure, you must use an array. Of the da ...
Linked list
In computer science, a linked list is a data structure consisting of a group of nodes which together represent a sequence. Under the simplest form, each node is composed of data and a reference (in other words, a link) to the next node in the sequence; more complex variants add additional links. This structure allows for efficient insertion or removal of elements from any position in the sequence.Linked lists are among the simplest and most common data structures. They can be used to implement several other common abstract data types, including lists (the abstract data type), stacks, queues, associative arrays, and S-expressions, though it is not uncommon to implement the other data structures directly without using a list as the basis of implementation.The principal benefit of a linked list over a conventional array is that the list elements can easily be inserted or removed without reallocation or reorganization of the entire structure because the data items need not be stored contiguously in memory or on disk, while an array has to be declared in the source code, before compiling and running the program. Linked lists allow insertion and removal of nodes at any point in the list, and can do so with a constant number of operations if the link previous to the link being added or removed is maintained during list traversal.On the other hand, simple linked lists by themselves do not allow random access to the data, or any form of efficient indexing. Thus, many basic operations — such as obtaining the last node of the list (assuming that the last node is not maintained as separate node reference in the list structure), or finding a node that contains a given datum, or locating the place where a new node should be inserted — may require sequential scanning of most or all of the list elements. The advantages and disadvantages of using linked lists are given below.