4.html - Hints to Written Assignment 3 CSc401 Spring 2007 Chapters 4 and 5 Chapter 4 Sorting Sets and Selection 1(Exercise R-4.5 Suppose we are given

# 4.html - Hints to Written Assignment 3 CSc401 Spring 2007...

• 2

This preview shows page 1 - 2 out of 2 pages.

Hints to Written Assignment 3, CSc401, Spring 2007 Chapters 4 and 5 Chapter 4: Sorting, Sets, and Selection 1. (Exercise R-4.5) Suppose we are given two n-element sorted sequences A and B that should not be viewed as sets (that is, A and B may contain duplicate entries). Describe an O(n)-time method (algorithm) for computing a sequence representing the set A B (with no duplicates). Hint : Merge sequences A and B into a new sequence C (i.e., call merge(A, B, C)). Do a linear scan through the sequence C removing all duplicate elements (i.e., if the next element is equal to the current element, remove it). 2. (Exercise C-14) Suppose we are given a sequence S of n elements, each of which is an integer in the range [0, n 2 -1]. Describe a simple method (algorithm) for sorting S in O(n) time. Hint : Think of alternate ways of viewing the elements. Hint: To sort S, do a radix sort on the bits of each of the n elements, viewing them as pairs (i, j) such that i and j are integers in the range [0, n-1].

#### You've reached the end of your free preview.

Want to read both pages?

• Fall '18
• mot

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes