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Write a program using C++ that uses a hashing
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- Implement a city database using ordered lists. Each database record contains the name of the city (a string of arbitrary length) and the coordinates of the city expressed as integer x and y coordinates. Your database should allow records to be inserted, deleted by name, and searched by name. Another operation that should be supported is to print all records within a given distance of a specified point/coordinate. The order of cities should be alphabetically by city name. Implement the database using: an array- based list implementation. By using JAVA.Write a C++ program that: (1) defines and implements a hash class that constructs a 15 element array (may be implemented using a vector, a deque, or a list, if you prefer, (using the STL implementations, not Nyhoff's), storing strings, using the following hash function: ((first_letter) + (last_letter) - (second_letter))% 15 (2) the driver program should: a. query the user for ten words and store them using the hash technique described above. b. print out the contents of each position of the array (or vector, deque, or whatever you used), showing vacant as well as filled positions. Remember, only 10 of the 15 positions will be filled. c. repeatedly query the user for a target word, hash the word, check for its inclusion in the list of stored words, and report the result. Continue doing this task until the user signals to stop (establish a sentinel condition).Implement a city database using ordered lists by using java. Each database record contains the name of the city (a string of arbitrary length) and the coordinates of the city expressed as integer x and y coordinates. Your database should allow records to be inserted, deleted by name, and searched by name. Another operation that should be supported is to print all records within a given distance of a specified point/coordinate. The order of cities should be alphabetically by city name. Implement the database using both: an arraybased list implementation, and a circular single linked list implementation.Use may the following node, SLL implementations to implement an ordered circular single linked list
- Given the following Java functions, transcribe it into a Python 3 program. /*** Removes and returns the entry associated with the specified key* in the Hash Table. Returns null if the Hash Table contains no mapping* for this key.*/Entry removeEntryForKey(Object key) {int hash = hash(key);int i = indexFor(hash, table.length);Entry prev = table[i];Entry e = prev; while (e != null) {Entry next = e.next;if (e.hash == hash && eq(k, e.key)) {size--;if (prev == e)table[i] = next;elseprev.next = next;return e;}prev = e;e = next;}return e;}Write a C++ program that: (1) defines and implements a hash class that constructs a 15 element array (may be implemented using a vector, a deque, or a list, if you prefer, (using the STL implementations), storing strings, using the following hash function: ((first_letter) + (last_letter) - (second_letter))% 15 (2) the driver program should: a. query the user for ten words and store them using the hash technique described above. b. print out the contents of each position of the array (or vector, deque, or whatever you used), showing vacant as well as filled positions. Remember, only 10 of the 15 positions will be filled. c. repeatedly query the user for a target word, hash the word, check for its inclusion in the list of stored words, and report the result. Continue doing this task until the user signals to stop (establish a sentinel condition).Write a program in Java to implement a Singly linked list with two fields: String name and Integer Age. a) Then, Program ask user to enter name and age of a student, and add the node in the link list b) Store name and age of 5 students c) Then, traverse the link List to print all the nodes
- Write a program in c++ and make sure it works, that reads a list of students (first names only) from a file. It is possible for the names to be in unsorted order in the file but they have to be placed in sorted order within the linked list.The program should use a doubly linked list.Each node in the doubly linked list should have the student’s name, a pointer to the next student, and a pointer to the previous student. Here is a sample visual. The head points to the beginning of the list. The tail points to the end of the list. When inserting consider all the following conditions:if(!head){ //no other nodes}else if (strcmp(data, head->name)<0){ //smaller than head}else if (strcmp(data, tail->name)>0){ //larger than tail}else{ //somewhere in the middle} When deleting a student consider all the following conditions:student may be at the head, the tail or in the middleBelow, you will find a sample of what the file looks like. Notice the names are in…The exercise consists of Hashing. Note you are notallowed to rely on Java library classes in your implementation. Part 3Implement in Java a function that takes as input an integer n 2 and generates n differentstrings all hashing to the same value when the following hash function is used.public int hashCode(String s) { int hash = 0; int skip = Math.max(1, s.length() / 3); for (int i = 0; i < s.length(); i += skip) hash = (hash * 37) + s.charAt(i); return hash;}Assume ASCII characters. and please Briefly describe your implementation .Write a C++ Program to implement a hash table with chaining that does the following: The hash table should have 9 buckets Insert 6 Insert 4 Delete 6 Insert 27 Insert 28 Delete 4 Insert 90 Display the final hash table.
- Apply the methods in the ListIterator interface to write a Java program in NetBeans that creates a LinkedList of four elements of type string, namely: Java, C#, PHP and Python.The program should then print out the elements initially in the original order, and then afterwards in reverse order using the ListIterator methods. In this case, the following(attached) is the expected output:Please answer it in Python Write a function pairsbypairslist that would return pair by pair from the smallest value to the biggest value For example [12, 13, 11, 15], # return : (11, 12) and (13, 15) [9, 15, 4, 24, 19, 2] # return : (2,4) (9,15) (19,24) [1, 5, 9, 15, 21, 9, 12, 9], # return : (1,5) (9,9) (9,12) (15,21)Can you give me example of quadratic probing in C++ ? The quadratic problem function has one input, call it m where m is a int. The return type is an int. For example, you have the serial number 2232012, quadProb(2232012) will return an int. Assume that the hash table size is 450. Assume that you are working with an uninitialized 2D array. Also write an insert() function to populate this 2D array.