Given the following code, using our HashTable implementation: HashTable table = new HashTable (5); table.put(3); table.put(-3); table.put(20); table.put(8); table.put(0); table.put(30); How many collisions occurred in the process of adding values to this HashTable? Respond with -1 if this code causes a run-time error, or if you feel there is insufficient information to answer this question. Hints: • The size of the ArrayList is 5. • A collision occurs when a value is added to a non-empty LinkedList. • The hashCode() method applied to an Integer, x, is that same Integer, expressed as an int. new Integer(17).hashCode() returns 17.

Given the following code, using our HashTable implementation: HashTable table = new HashTable (5); table.put(3); table.put(-3); table.put(20); table.put(8); table.put(0); table.put(30); How many collisions occurred in the process of adding values to this HashTable? Respond with -1 if this code causes a run-time error, or if you feel there is insufficient information to answer this question. Hints: • The size of the ArrayList is 5. • A collision occurs when a value is added to a non-empty LinkedList. • The hashCode() method applied to an Integer, x, is that same Integer, expressed as an int. new Integer(17).hashCode() returns 17.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Java's HashMap is implemented as a hash table. The put method stores a value with its associated key. Assuming that the put method takes .001 seconds for a HashMap containing 1,000 values, roughly how long would you expect put to take when called on a HashMap containing 100,000 values? Group of answer choices .001s .01s .1s 1.0s 10.0s
All of the values in our poorly created hash map have been placed in the same bucket. Why does this go against the purpose of using a hash map in the first place?
you can search a hashtable either by the keys , or by the assiocated values. True or false ?
Given values below: 66 47 87 900 126 140 145 500 177 285 393 395 467 566 620 735 Store the values into a hash table with ten buckets, each containing three slots. If a bucket is full, use the next (sequential) bucket that contains a free slot. And Store the values into a hash table that uses the hash function key % 10 to determine into which of ten chains (separate chaining) to put the value?
Given a HashMap pre-filled with student names as keys and grades as values, complete main() by reading in the name of a student, outputting their original grade, and then reading in and outputting their new grade. Ex: If the input is: Quincy Wraight 73.1 the output is: Quincy Wraight's original grade: 65.4 Quincy Wraight's new grade: 73.1
Suppose you are given the following set of keys to insert into a hash table that holds exactly 11 values: 113, 117, 97, 100, 114, 108, 116, 105, 99. Using the hash function= value %table_size. Which of the following best demonstrates the contents of the hash table after all the keys have been inserted using linear probing? 100,__,__,113,114,105,116,117,97,108,99 99,100,__,113,114,__,116,117,105,97,108 100,113,117,97,14,108,116,105,99,__,__ 117,114,108,116,105,99,__,__,97,100,113
Is it feasible to store a HashMap with a duplicate key?
Given a HashMap pre-filled with student names as keys and grades as values, complete main() by reading in the name of a student, outputting their original grade, and then reading in and outputting their new grade. Ex: If the input is: Quincy Wraight 73.1 the output is: Quincy Wraight's original grade: 65.4 Quincy Wraight's new grade: 73.1 import java.util.Scanner;import java.util.HashMap; public class StudentGrades { public static void main (String[] args) { Scanner scnr = new Scanner(System.in); String studentName; double studentGrade; HashMap<String, Double> studentGrades = new HashMap<String, Double>(); // Students's grades (pre-entered) studentGrades.put("Harry Rawlins", 84.3); studentGrades.put("Stephanie Kong", 91.0); studentGrades.put("Shailen Tennyson", 78.6); studentGrades.put("Quincy Wraight", 65.4); studentGrades.put("Janine Antinori", 98.2); // TODO: Read in new grade for a…
Suppose you are given the following set of keys to insert into a hash table that holds exactly 11 values: 113, 117, 97, 100, 114, 108, 116, 105, 99. Using the hash function= value %table_size. Which of the following best demonstrates the contents of the hash table after all the keys have been inserted using linear probing? a) 100,__,__,113,114,105,116,117,97,108,99 b) 99,100,__,113,114,__,116,117,105,97,108 c) 100,113,117,97,14,108,116,105,99,__,__ d) 117,114,108,116,105,99,__,__,97,100,113
Suppose you have an object made up of two w-bit integers, x and y. Show why x+y does not make a good hash code for your object. Give an example of a large set of objects that would all have the same hash code. c++ and provide good comments.
Can we do HT [ h(key) ] = key in question below all the time? Why or why not? Suppose you have a hash table HT and a hash function h, What does the following line mean? HT [ h(key) ] = key;
Double Hashing Given input {19, 29, 7, 116, 44, 8, 45}, a hash function h(x) = x mod 11 and the double hash h2(key) = 7 - (key mod 7). Show the resulting hash table using double hashing. copyAndPaste the table into the textBox for your nice answer. Please consider showing work for the h(x). [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]