Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
11th Edition
ISBN: 9780134671604
Author: Y. Daniel Liang
Publisher: PEARSON
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Chapter 27.4, Problem 27.4.6CP
Program Plan Intro
Open Addressing:
- Open addressing is a method of finding an open location in the hash table at the time of collision.
- There are several variations for open addressing such as linear probing, quadratic probing, and double hashing.
Double Hashing:
- One other open addressing method that can avoid the clustering problem is referred as double hashing.
- In order to avoid the clustering problem, double hashing method uses a secondary hash function on the keys to determine the increments.
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3.
Double hashing is one of the methods to resolve collision. Write a function to
implement this method. The equations used in this method are given below. Note:
implement everything within the double hash function.
P = (P + INCREMENT(Key)) mod TABLE_SIZE
INCREMENT(Key) = 1 + (Key mod INCR)
Insert keys {10, 22, 11, 31, 24, 88, 38, 21} into an empty hash table with CAPACITY = 10 using quadratic probing (c1=0 and c2=1) to resolve collision (You shouldn't use a for/while loop except to increment the value of i for quadratic probing). Use the hash function is h(k, i) = (h’(k) + c1* i + c2* i^2) mod 10 and h’(k) = k mod 10.
Draw a hash table given these numbers and hashing function, build each of the hashing
options, and decide if it is efficient, and what function or size might be a better match. Explain
why it is efficient or what changes you would make for it to be efficient.
a. Scenario 1
a. Hashing function: k mod 4
b. Linear Probing
c. Array from 0 to 3
d. Values: 19, 7, 12, 11
b. Scenario 2
a. Hashing function: k mod 10
b. Quadratic Probing
c. Array from 0 to 9
d. Values: 20 39 23 56 34 29 55 13
c. Scenario 3
a. Hashing function: first three digits of a phone number
b. Overflow chaining
c. File with base address of 0 and ends at 999
d. Values: 3135552314, 7343455523, 3134445555, 3134441234, 7342346555,
e. 5555342232, 4072984555, 2692185552
d. Scenario 4
a. Hashing function: k mod 100
b. Internal Chaining
c. Array 0 to 99
d. Values: 314 325 623 2234 425 1234 2132 2361 1245 123 436 742
Chapter 27 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version, Student Value Edition (11th Edition)
Ch. 27.2 - Prob. 27.2.1CPCh. 27.3 - Prob. 27.3.1CPCh. 27.3 - Prob. 27.3.2CPCh. 27.3 - Prob. 27.3.3CPCh. 27.3 - Prob. 27.3.4CPCh. 27.3 - Prob. 27.3.5CPCh. 27.3 - Prob. 27.3.6CPCh. 27.3 - If N is an integer power of the power of 2, is N /...Ch. 27.3 - Prob. 27.3.8CPCh. 27.3 - Prob. 27.3.9CP
Ch. 27.4 - Prob. 27.4.1CPCh. 27.4 - Prob. 27.4.2CPCh. 27.4 - Prob. 27.4.3CPCh. 27.4 - Prob. 27.4.4CPCh. 27.4 - Prob. 27.4.5CPCh. 27.4 - Prob. 27.4.6CPCh. 27.5 - Prob. 27.5.1CPCh. 27.6 - Prob. 27.6.1CPCh. 27.6 - Prob. 27.6.2CPCh. 27.6 - Prob. 27.6.3CPCh. 27.7 - Prob. 27.7.1CPCh. 27.7 - What are the integers resulted from 32 1, 32 2,...Ch. 27.7 - Prob. 27.7.3CPCh. 27.7 - Describe how the put(key, value) method is...Ch. 27.7 - Prob. 27.7.5CPCh. 27.7 - Show the output of the following code:...Ch. 27.7 - If x is a negative int value, will x (N 1) be...Ch. 27.8 - Prob. 27.8.1CPCh. 27.8 - Prob. 27.8.2CPCh. 27.8 - Can lines 100103 in Listing 27.4 be removed?Ch. 27.8 - Prob. 27.8.4CPCh. 27 - Prob. 27.1PECh. 27 - Prob. 27.2PECh. 27 - (Modify MyHashMap with duplicate keys) Modify...Ch. 27 - Prob. 27.6PECh. 27 - Prob. 27.7PECh. 27 - Prob. 27.8PECh. 27 - Prob. 27.10PECh. 27 - Prob. 27.11PECh. 27 - (setToList) Write the following method that...Ch. 27 - (The Date class) Design a class named Date that...Ch. 27 - (The Point class) Design a class named Point that...
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