Chapter 7 Backtracking Algorithms Truth is not discovered by proofs but by exploration. It is always experimental. — Simone Weil‚ The New York Notebook‚ 1942 Objectives • • • • • • To appreciate how backtracking can be used as a solution strategy. To recognize the problem domains for which backtracking strategies are appropriate. To understand how recursion applies to backtracking problems. To be able to implement recursive solutions to problems involving backtracking. To comprehend the minimax
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five sections in the band. The cost of costumes is quoted in US dollars. The cost by section is given in the table below: SECTION COST OF COSTUME A $160 B $220 C $280 D $350 E $425 Problem-Solving 1. Develop an algorithm or write pseudocode that accepts as input the names of no more than twelve masqueraders who each have paid the full cost of their costume and the amount each has paid. A masquerader may have paid for a costume in any of the five sections in the band. The algorithm
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| Control Flow Diagram—Display_Results |[pic] | Pseudocode Example Main Module Declare currencyType as Integer Declare internationalValue as real Declare USValue as real currencyType = 1 \ Comment: set currencyType to some number less than 6 \ to drop
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in the program and its scope is the entire program so that all of the modules within the program can access a global variable. They can be declared in modules by simply setting up an assignment box and adding in the variables to the modules. In Pseudocode‚ you will simply write out the particular variable you want to declare and its value. Many programmers go against the idea of using global variables in modules but there are a few good sides to using global variables. For one‚ the global variables
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element encountered into its correct position. The ordered sequence into which the element is inserted is stored at the beginning of the array in the set of indices already examined. Each insertion overwrites a single value: the value being inserted. Pseudocode: // The values in A[i] are checked in-order‚ starting at the second one for i ← 1 to i ← length(A) { // at the start of the iteration‚ A[0..i-1] are in sorted order // this iteration will insert A[i] into that sorted order //
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is properly executed‚ we will be able to input any sized room and quickly be able to find the square footage. B. Program Design – Following the directions in the assignment‚ clearly write up your problem design in this section and comment your pseudocode. Main module Declare EntireHouse As String Declare LivingRoom‚ As Float Declare Kitchen As Float Declare BedRoom As Float Declare BathRoom As Float Write “Square Footage Program” Write “This program
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Identify a task you perform regularly‚ such as cooking‚ mowing the lawn‚ or driving a car. I used driving a car as the example in this checkpoint. Write a short‚ structured design (pseudocode only) that accomplishes this task. Declare CarDoor as Real Declare Car as Real Declare BrakePedal as Real Declare Reverse as Real Declare SteeringWheel as Real Declare Drive as Real Open CarDoor Sit in Car Close CarDoor Press BrakePedal
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This program will let the user enter all the names of their family members‚ the ages of those family members‚ and their state of residence. The program will display the average age of all family members input‚ and also display the names of any family members that live in Texas. We will create three separate arrays; one for the names of the family members‚ another for their ages‚ and the third will be for their state of residence. We’ll first ask the user to enter the number of family members he
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SHORT ANSWER PART P71 the programmer creates ad design for the program‚ which starts by asking the client what the prograame is supposed to accomplish . Pseudocode is an informal high-level description of the operating principle of a computer program or other algorithm.it is an informal language that has no synthax rules and i snot meant to be compiled or executed input is received input data is processed out put is displayed user friendly means a term used to describe
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this point‚ you have identified the processes the program must perform‚ but you have not given any consideration to exactly how the processes work together to solve the problem. At this point‚ you must generate a description of the processing using pseudocode‚ a natural language description of the processing the application must perform. The natural place to start is the system-level requirements you identified in the input-process-output (IPO) chart. Determine how the processes work together: Once
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