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Lec24-25 - Computer Programming TA C162 Algorithms and...

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1 Computer Programming TA C162 Second Semester 2008-2009 Algorithms and Problem Solving What is an Algorithm? Algorithm Properties Representation of Algorithm i.e. Flow Chart Examples
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2 Computer Programming TA C162 Second Semester 2008-2009 Solving Problems using a Computer Methodologies for creating computer programs that perform a desired function. Problem Solving How do we figure out what to tell the computer to do? Convert problem statement into algorithm, using Stepwise Refinement . Convert algorithm into programming statements Ex. LC-3 instructions
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3 Computer Programming TA C162 Second Semester 2008-2009 Three Basic Constructs There are three basic ways to decompose a task: Task Subtask 1 Subtask 2 Subtask 1 Subtask 2 Test condition Subtask Test condition Sequential Conditional Iterative True True False False
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4 Computer Programming TA C162 Second Semester 2008-2009 What is an Algorithm? What is an Algorithm? An algorithm is a precisely defined and ordered sequence of instructions that is guaranteed to solve a specific problem. The algorithm must be general, that is, it should solve the problem for all possible input sets to the problem.
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