TAILIEUCHUNG - Data Structures and Algorithms: Analysis of Algorithms

Data Structures and Algorithms: Analysis of Algorithms includes what to do with algorithms? (Programmer needs to develop a working solution, Client wants problem solved efficiently, Theoretician wants to understand); Why analyze algorithms?. | Analysis of Algorithms Data Structures and Algorithms Acknowledgement: These slides are adapted from slides provided with Data Structures and Algorithms in C++ Goodrich, Tamassia and Mount (Wiley, 2004) Motivation What to do with algorithms? Programmer needs to develop a working solution Client wants problem solved efficiently Theoretician wants to understand Why analyze algorithms? To compare different algorithms for the same task To predict performance in a new environment To set values of algorithm parameters Algorithm Analysis 2 Outline and Reading Running time (§) Pseudo-code Counting primitive operations (§) Asymptotic notation (§) Asymptotic analysis (§) Case study (§) Algorithm Analysis 3 Running Time We are interested in the design of "good" data structures and algorithms. Measure of "goodness": Running time (most important) Space usage The running time of an algorithm typically grows with the input size, and is affected by other factors: Hardware environments: processor, memory, disk. Software environments: OS, compiler. Focus: input size vs. running time. Algorithm Analysis 4 Experimental Studies 9000 8000 7000 Time (ms) Write a program implementing the algorithm Run the program with inputs of varying size and composition Use a method like () or clock() to get an accurate measure of the actual running time Plot the results 6000 5000 4000 3000 2000 1000 0 0 50 100 Input Size Algorithm .

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• Data Structures and Algorithms
• Analysis of Algorithms
• Programmer needs to develop a working solution
• Client wants problem solved efficiently
• Theoretician wants to understand
• Analyze algorithms
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• Complexity of Algorithms
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• Algorithms Using C# part 1
• Basic Sorting Algorithms
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• Heap Definition
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