Download CS3401 Algorithms (ALG) Books Lecture Notes Syllabus PartA 2 marks with answers CS3401 Algorithms Important PartB 16 marks Questions, PDF Books, Question Bank with answers Key, CS3401 Algorithms Syllabus & Anna University CS3401 Algorithms Question Papers Collection.
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“CS3401 Algorithms Notes, Lecture Notes, Previous Years Question Papers “
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CS3401 Algorithms (ALG) Notes Part A & Part B Important Questions with Answers
CS3401 Algorithms – Study Materials – Details
Semester  04 
Department  Computer Science and Engineering (CSE) 
Year  Second Year (II Year) 
Regulation  R2021 
Subject Code / Name  CS3401 Algorithms (ALG) 
Content  Syllabus, Question Banks, Local Authors Books, Lecture Notes, Important Part A 2 Marks Questions and Important Part B 16 Mark Questions, Previous Years Anna University Question Papers Collections. 
Material Format  PDF (Free Download) 
CS3401 Algorithms (ALG) “R2021 – SYLLABUS”
CS3401 ALGORITHMS
UNIT I INTRODUCTION
Algorithm analysis: Time and space complexity – Asymptotic Notations and its properties Best case, Worst case and average case analysis – Recurrence relation: substitution method – Lower bounds – searching: linear search, binary search and Interpolation Search, Pattern search: The naïve stringmatching algorithm – RabinKarp algorithm – KnuthMorrisPratt algorithm. Sorting: Insertion sort – heap sort
UNIT II GRAPH ALGORITHMS
Graph algorithms: Representations of graphs – Graph traversal: DFS – BFS – applications – Connectivity, strong connectivity, biconnectivity – Minimum spanning tree: Kruskal’s and Prim’s algorithm Shortest path: BellmanFord algorithm – Dijkstra’s algorithm – FloydWarshall algorithm Network flow: Flow networks – FordFulkerson method – Matching: Maximum bipartite matching
UNIT III ALGORITHM DESIGN TECHNIQUES
Divide and Conquer methodology: Finding maximum and minimum – Merge sort – Quick sort Dynamic programming: Elements of dynamic programming — Matrixchain multiplication – Multi stage graph — Optimal Binary Search Trees. Greedy Technique: Elements of the greedy strategy – Activityselection problem – Optimal Merge pattern — Huffman Trees.
UNIT IV STATE SPACE SEARCH ALGORITHMS
Backtracking: nQueens problem – Hamiltonian Circuit Problem – Subset Sum Problem – Graph colouring problem Branch and Bound: Solving 15Puzzle problem – Assignment problem – Knapsack Problem – Travelling Salesman Problem
UNIT V NPCOMPLETE AND APPROXIMATION ALGORITHM
Tractable and intractable problems: Polynomial time algorithms – Venn diagram representation – NPalgorithms – NPhardness and NPcompleteness – Bin Packing problem – Problem reduction: TSP – 3 CNF problem. Approximation Algorithms: TSP – Randomized Algorithms: concept and application – primality testing – randomized quick sort – Finding kth smallest number
PRACTICAL EXERCISES: 30 PERIODS
Searching and Sorting Algorithms
1. Implement Linear Search. Determine the time required to search for an element. Repeat the experiment for different values of n, the number of elements in the list to be searched and plot a graph of the time taken versus n.
2. Implement recursive Binary Search. Determine the time required to search an element. Repeat the experiment for different values of n, the number of elements in the list to be searched and plot a graph of the time taken versus n.
3. Given a text txt [0…n1] and a pattern pat [0…m1], write a function search (char pat [ ], char txt [ ]) that prints all occurrences of pat [ ] in txt [ ]. You may assume that n > m.
4. Sort a given set of elements using the Insertion sort and Heap sort methods and determine the time required to sort the elements. Repeat the experiment for different values of n, the number of elements in the list to be sorted and plot a graph of the time taken versus n.
Graph Algorithms
1. Develop a program to implement graph traversal using Breadth First Search
2. Develop a program to implement graph traversal using Depth First Search
3. From a given vertex in a weighted connected graph, develop a program to find the shortest paths to other vertices using Dijkstra’s algorithm.
4. Find the minimum cost spanning tree of a given undirected graph using Prim’s algorithm.
5. Implement Floyd’s algorithm for the AllPairs ShortestPaths problem.
6. Compute the transitive closure of a given directed graph using Warshall’s algorithm.
Algorithm Design Techniques
1. Develop a program to find out the maximum and minimum numbers in a given list of n numbers using the divide and conquer technique.
2. Implement Merge sort and Quick sort methods to sort an array of elements and determine the time required to sort. Repeat the experiment for different values of n, the number of elements in the list to be sorted and plot a graph of the time taken versus n.
State Space Search Algorithms
1. Implement N Queens problem using Backtracking.
Approximation Algorithms Randomized Algorithms
1. Implement any scheme to find the optimal solution for the Traveling Salesperson problem and then solve the same problem instance using any approximation algorithm and determine the error in the approximation.
2. Implement randomized algorithms for finding the kth smallest number. The programs can be implemented in C/C++/JAVA/ Python.
TEXT BOOKS:
1. Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest and Clifford Stein, “Introduction to Algorithms”, 3rd Edition, Prentice Hall of India, 2009.
2. Ellis Horowitz, Sartaj Sahni, Sanguthevar Rajasekaran “Computer Algorithms/C++” Orient Blackswan, 2nd Edition, 2019.
REFERENCES:
1. Anany Levitin, “Introduction to the Design and Analysis of Algorithms”, 3rd Edition, Pearson Education, 2012.
2. Alfred V. Aho, John E. Hopcroft and Jeffrey D. Ullman, “Data Structures and Algorithms”, Reprint Edition, Pearson Education, 2006.
3. S. Sridhar, “Design and Analysis of Algorithms”, Oxford university press, 2014.
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