Introduction to Algorithms
Introduction to Algorithms
3rd Edition
ISBN: 9780262033848
Author: Thomas H. Cormen, Ronald L. Rivest, Charles E. Leiserson, Clifford Stein
Publisher: MIT Press
bartleby

Concept explainers

Question
Book Icon
Chapter 17, Problem 1P

(a)

Program Plan Intro

To describe how the function reverses that run in θ(k) time can runs in O(nk) if the length is n=2k .

(a)

Expert Solution
Check Mark

Explanation of Solution

The reverse operation is performed by using two arrays. Consider another array and copy the elements in the reverse order to the new array from the original array. The operation is performed as swapping the values with the same index in the both array.

After swapping the element to current index it required to set the entry in the second array corresponding to the bit-reverses.

Since the swapping of the element time is depends upon the number of element so suppose there are n -elements in the function of k bit reversed algorithm then the running time is equal to the product of n and k .

(b)

Program Plan Intro

To describe an implementation of the BIT-REVERSED-INCREMENT procedure that allows the bit-reversal permutation on an n -element to perform in O(n) time.

(b)

Expert Solution
Check Mark

Explanation of Solution

The pseudo-code of the BIT-REVERSED-INCREMENT implementation is given below:

REVERSED-INCREMENT( a )

Set m=1 followed by k zeroes.

while m bitwise-AND ais not zero do

  a=abitwiseXOR m .

shift m right by 1.

end while.

return m bitwise-OR a.

end

The algorithm swaps the value of binary counter and reversed counter so it updates the values by incrementing the counter variable.

The operation is performed is carried out bit by bit so it consider one bit at the time to compared and reversed the values.

The BIT-REVERSED-INCREMENT operation will take constant amortized time and to perform the bit-reversed permutation requires a normal binary counter and a reversed counter.

(c)

Program Plan Intro

To explain how shifting any word shift left or right by one bit in unit time without changing the run time of the implementation.

(c)

Expert Solution
Check Mark

Explanation of Solution

The procedure uses single shift so the complexity of the procedure is not changed as any words shift left with unit time.

The procedural is based on the number of bit swapped not on the operation therefore any change in the operation such as type of shift does not affect the time complexity of the procedure.

Since, the operation time is depends upon the number of element so the running time is equal to the product of n and k , where n is the size and k is shift bit.

Hence, there is no change in the running time of implementation.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
23:12 Chegg content://org.teleg + 5G 5G 80% New question A feed of 60 mol% methanol in water at 1 atm is to be separated by dislation into a liquid distilate containing 98 mol% methanol and a bottom containing 96 mol% water. Enthalpy and equilibrium data for the mixture at 1 atm are given in Table Q2 below. Ask an expert (a) Devise a procedure, using the enthalpy-concentration diagram, to determine the minimum number of equilibrium trays for the condition of total reflux and the required separation. Show individual equilibrium trays using the the lines. Comment on why the value is Independent of the food condition. Recent My stuff Mol% MeOH, Saturated vapour Table Q2 Methanol-water vapour liquid equilibrium and enthalpy data for 1 atm Enthalpy above C˚C Equilibrium dala Mol% MeOH in Saturated liquid TC kJ mol T. "Chk kot) Liquid T, "C 0.0 100.0 48.195 100.0 7.536 0.0 0.0 100.0 5.0 90.9 47,730 928 7,141 2.0 13.4 96.4 Perks 10.0 97.7 47,311 87.7 8,862 4.0 23.0 93.5 16.0 96.2 46,892 84.4…
You are working with a database table that contains customer data. The table includes columns about customer location such as city, state, and country. You want to retrieve the first 3 letters of each country name. You decide to use the SUBSTR function to retrieve the first 3 letters of each country name, and use the AS command to store the result in a new column called new_country.  You write the SQL query below. Add a statement to your SQL query that will retrieve the first 3 letters of each country name and store the result in a new column as new_country.
We are considering the RSA encryption scheme. The involved numbers are small, so the communication is insecure.  Alice's public key (n,public_key) is (247,7). A code breaker manages to factories  247 = 13 x 19  Determine Alice's secret key. To solve the problem, you need not use the extended Euclid algorithm, but you may assume that her private key is one of the following numbers 31,35,55,59,77,89.
Knowledge Booster
Background pattern image
Computer Science
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
Text book image
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Text book image
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
Text book image
New Perspectives on HTML5, CSS3, and JavaScript
Computer Science
ISBN:9781305503922
Author:Patrick M. Carey
Publisher:Cengage Learning
Text book image
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning
Text book image
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage