Problem Solving with C++ (10th Edition)
10th Edition
ISBN: 9780134448282
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
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Chapter 8, Problem 9PP
Redo
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ObjectivesJava refresher (including file I/O)Use recursionDescriptionFor this project, you get to write a maze solver. A maze is a two dimensional array of chars. Walls are represented as '#'s and ' ' are empty squares. The maze entrance is always in the first row, second column (and will always be an empty square). There will be zero or more exits along the outside perimeter. To be considered an exit, it must be reachable from the entrance. The entrance is not an exit.Here are some example mazes:mazeA7 9# # ###### # # ## # # #### # ## ##### ## ##########
RequirementsWrite a MazeSolver class in Java. This program needs to prompt the user for a maze filename and then explore the maze. Display how many exits were found and the positions (not indices) of the valid exits. Your program can display the valid exits found in any order. See the examples below for exact output requirements. Also, record…
Need python help.
For problems 1 and 2, add your code to the file Lab2.java. Add your tests in the main function of Lab2.java. Do not use static variables in class Lab2 to implement recursive methods.
Problem 1:
Implement a recursive method min that accepts an array and returns the minimum
element in the array. The recursive step should divide the array into two halves and find the minimum in each half. The program should run in O(n) time and consume O(logn) memory.
Demonstrate the output of min on the array
int [] a = { 2, 3, 5, 7, 11, 13, 17, 19, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 23, 29, 31,
37, 41, 43 }
Problem 2
You have been offered a job that pays as follows:
On the first day, you are paid 1 cent, on the second day, 2 cents, on the third day, 4 cents and so on. In other words, your pay doubles every day. Write a recursive method computePay that for a given day number computes the pay in cents.
Assume that you accumulate all the money that you are paid. Write a…
Chapter 8 Solutions
Problem Solving with C++ (10th Edition)
Ch. 8.1 - Prob. 1STECh. 8.1 - What C string will be stored in singingString...Ch. 8.1 - What (if anything) is wrong with the following...Ch. 8.1 - Suppose the function strlen (which returns the...Ch. 8.1 - Prob. 5STECh. 8.1 - How many characters are in each of the following...Ch. 8.1 - Prob. 7STECh. 8.1 - Given the following declaration and initialization...Ch. 8.1 - Given the declaration of a C-string variable,...Ch. 8.1 - Write code using a library function to copy the...
Ch. 8.1 - What string will be output when this code is run?...Ch. 8.1 - Prob. 12STECh. 8.1 - Consider the following code (and assume it is...Ch. 8.1 - Consider the following code (and assume it is...Ch. 8.2 - Consider the following code (and assume that it is...Ch. 8.2 - Prob. 16STECh. 8.2 - Consider the following code: string s1, s2...Ch. 8.2 - What is the output produced by the following code?...Ch. 8.3 - Is the following program legal? If so, what is the...Ch. 8.3 - What is the difference between the size and the...Ch. 8 - Create a C-string variable that contains a name,...Ch. 8 - Prob. 2PCh. 8 - Write a program that inputs a first and last name,...Ch. 8 - Write a function named firstLast2 that takes as...Ch. 8 - Write a function named swapFrontBack that takes as...Ch. 8 - Prob. 6PCh. 8 - Write a program that inputs two string variables,...Ch. 8 - Solution to Programming Project 8.1 Write a...Ch. 8 - Write a program that will read in a line of text...Ch. 8 - Give the function definition for the function with...Ch. 8 - Write a program that reads a persons name in the...Ch. 8 - Write a program that reads in a line of text and...Ch. 8 - Write a program that reads in a line of text and...Ch. 8 - Write a program that can be used to train the user...Ch. 8 - Write a sorting function that is similar to...Ch. 8 - Redo Programming Project 6 from Chapter 7, but...Ch. 8 - Redo Programming Project 5 from Chapter 7, but...Ch. 8 - Prob. 11PPCh. 8 - Write a program that inputs a time from the...Ch. 8 - Solution to Programming Project 8.14 Given the...Ch. 8 - Write a function that determines if two strings...Ch. 8 - Write a program that inputs two strings (either...Ch. 8 - Write a program that manages a list of up to 10...
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- Part I Explain encapsulation and packaging in Java. Part II Create a package for int array operations. Provide at least 5 different operation by this package. The operations are totally up to you. Part III Create a Test package in order to test the operations you defined in Part II. Note: Do not compress your files, submit only java files. Note: Do not forget to justify your answers with comments.arrow_forwardFor this exercise, you will create several recursive functions in order to get a better understanding of how recursion works. In exercise 2, we will illustrate using recursion for creating art. Create a new project in IntelliJ called Recursion. Add a new Java class called Recursion with a public static main function. You will add several functions to your Recursion class as follows: 1 Write a recursive function int sum(int n) that adds up the numbers from n to 1 and print your result. For example from main do the following: Recursion recursion = new Recursion();System.out.println(recursion.sum(6)); 1.2 Write a recursive function factorial(int n) that calculates the factorial of n. Print out the results. Add your function to your Recursion class. 1.3. Write a recursive function powerOf10(int n) that calculates 10n. 1.4. Write a more general recursive function powerOfN(int x, int p) that calculates the power of xp. Do not use the Math.pow function. 1.5.…arrow_forward(You need to have first completed Programming Project 13.1 to work on this project.) In this exercise, you will compare the efficiency of a recursive and an iterative function to compute the Fibonacci number.a. Examine the recursive function computation of Fibonacci numbers. Note that each Fibonacci number is recomputed many times. To avoid this recomputation, do Programming Project 13.1 iteratively, rather than recursively; that is, do the problem with a loop. You should compute each Fibonacci number once on the way to the number requested and discard the numbers when they are no longer needed. b. Time the solution for Programming Project 13.1 and Part a of this project in finding the 1st, 3rd, 5th, 7th, 9th, 11th, 13th, and 15th Fibonacci numbers. Determine how long each function takes. Compare and comment on your results. Hints: If you are running Linux, you can use the bash time utility. It gives real time (as in wall clock time), user time (time measured by cpu cycles devoted to…arrow_forward
- Can you please write the follwing in Java. You will implement this program in a specific way in order to gain some experience with loops, arrays and array lists. Use an array of strings to store the 4 strings listed in the description. Use a do-while loop for your 'game engine'. This means the game starts once the user enters money. The decision to stop occurs at the bottom of the loop. The do-while loop keeps going until the user quits, or there is no money left. The pseudocode for this 'game engine' is shown below: determine the fruits to display (step 3 below) and print them determine if there are 3 or 4 of the same image display the results update the customer balance as necessary prompt to play or quit continue loop if customer wants to play and there's money for another game. Use the Random class to generate a random number between 0 and 3. This random number will be an index into the array of strings. Add the string at that index to an ArrayList. You'll have to do…arrow_forwardIt's well knowledge that "points" have problems with "dangling and wild pointers." Provide evidence to back up the claim you made.arrow_forwardI already have the code for the assignment below, but the code has an error in the driver class. Please help me fix it. The assignment: Make a recursive method for factoring an integer n. First, find a factor f, then recursively factor n / f. This assignment needs a resource class and a driver class. The resource class and the driver class need to be in two separate files. The resource class will contain all of the methods and the driver class only needs to call the methods. The driver class needs to have only 5 lines of code The code of the resource class: import java.util.ArrayList;import java.util.List; public class U10E03R{ // Recursive function to // print factors of a number public static void factors(int n, int i) { // Checking if the number is less than N if (i <= n) { if (n % i == 0) { System.out.print(i + " "); } // Calling the function recursively // for the next number factors(n, i +…arrow_forward
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- a) Can you develop Java code.Create a recursive function to print all permutations of a string. For example, the permutation of the string "abc" is [abc, acb, bac, bca, cab, cba]. b) Revise the genericStack class to use an array instead of an ArrayList. Before adding a new element, make sure the array size is correct. If the current array is full, construct a new array twice the size, copy the elements, and add the new array. dont use aiarrow_forwardPlease complete the task by yourself only in JAVA with explanation. Don't copy. Thank you. Using quicksort to sort an array of car objects by various criteria. Define a class Car as follows: class Car { public String make; public String model; public int mpg; // Miles per gallon } c) Implement a comparator called CompareCarsByMakeThenDescendingMPG that can be passed as an argument to the quicksort method from the lecture notes. CompareCarsByMakeThenDescendingMPG should return a value that will cause quicksort to sort an array of cars in ascending order by make and, when two cars have the same make, in descending order by mpg.arrow_forwardCreate, compile, and run a recursive program. Choose one of the labs listed below and program it. More details for the lab can be found in the first PowerPoint for Chapter 9. Make sure your code is recursive. You can think of recursive code this way: If you cut and paste a recursive method into another class, it should still run without problems. In other words, you cannot have any instance variables (class-level variables) that the method depends on. Choice 1 - boolean isPalindrome (String str) that returns true if the input string is a palindrome. Choice 2 - boolean find (string fullStr, string subStr) that tests whether the string subStr is a substring of fullStr Choice 3- int numDigits (int num) to determine the number of digits in the number num Choice 4 - double intPower (double x, int n) to compute x^n, where n is a positive integer and x is a double precision variable Choice 5-void printSubstr (String str) that prints all substrings of the input string.arrow_forward
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