Announcements Announcements • Homework 1 Due on Friday Note • “Polynomial time” means time O(nk) for some k > 0. – [for graph algorithms it means O((|V|+|E|)k)] Last Time • Pre- and Post- orderings – Keep track of execution of DFS – Preorder when find a new vertex – Postorder when finish with vertex • […]
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Announcements Announcements HW 4 Due today Today Dynamic Programming Introduction Dynamic Programming (Ch 6) Background and past examples Longest Common Subsequence Knapsack Chain Matrix Multiplication All-Pairs Shortest Paths Independent Sets of Trees Travelling Salesman Computing Fibonacci Numbers Recall: Fn = 1 if n = 0 or 1 . Fn = Fn-1 + Fn-2 otherwise Naïve
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CM30173: Cryptography eserved@d =[@let@token art II CM30173: Cryptography Part II After DES: Triple DES Double-DES? Triple-DES? After DES: The Advanced Encryption Standard A new competition Rijndael: The chosen cipher Security of AES After DES: Triple DES After DES: The Advanced Encryption Standard Part II Private-key cryptography: block ciphers CM30173: CryptographyPart II CM30173: Cryptography Part II
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Question 1 (Shortest Paths, 30 points). Find the lengths of the shortest path from s to each other vertex in the graph below: 1 Question 2 (Crossing Close Pair, 35 points). Give an algorithm that given two sets A and B each consist- ing of n real numbers finds the minimum distance between a point
Announcements Announcements • Homework 5 Due Today • Exam 3 next week – Same Rules – Let me know by W if you need an alternative testing time (and didn’t need to for earlier tests) – Practice problems on webpage, review video soon Exam 3 Topics Chapter 5 • Greedy Algorithms • Exchange Arguments •
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CM30173: Cryptography\reserved@d =[@let@token art IV CM30173: Cryptography Part IV Mathematical background Arithmetic modulo n The Euclidean algorithm The extended Euclidean algorithm The Chinese remainder theorem Part V Public-key cryptography CM30173: Cryptography Part IV Mathematical background Arithmetic modulo n The Euclidean algorithm The extended Euclidean algorithm The Chinese remainder theorem Mathematical background Arithmetic modulo n The
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CSE 101 Homework 4 Solutions Winter 2021 This homework is due on gradescope Friday February 19th at 11:59pm pacific time. Remember to justify your work even if the problem does not explicitly say so. Writing your solutions in LATEXis recommend though not required. Question 1 (Dropping Lowest Grades, 35 points). In a class Ronaldo had
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CM30173: Cryptography\reserved@d =[@let@token art IV CM30173: Cryptography Part IV Mathematical background The Chinese remainder theorem Fermat’s little theorem The RSA cryptosystem Description of RSA Encryption is the inverse of decryption E!ciency concerns Part V Public-key cryptography CM30173: Cryptography Part IV Mathematical background The Chinese remainder theorem Fermat’s little theorem The RSA cryptosystem Description of RSA
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Rough Grading Rubric Spring 2018 In an attempt to make grading for this class a little more consistent and transparent, I am publishing a rough grading rubric to be used on exams and homeworks. This will not be applied exactly, as different problems have difficul- ties in different places, and we will often want to
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CM30173 University of Bath DEPARTMENT OF COMPUTER SCIENCE EXAMINATION CM30173 May 2010 No calculators may be brought in and used. Full marks will be given for correct answers to THREE questions. Only the best three answers will contribute towards the assessment. Examiners will attach importance to the number of well-answered questions. CM30173 CM30173 2. 1.
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