Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
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 (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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