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Given a class Answer<E>, write a method that converts argument e into String and returns that value. If the value is a primitve, (...
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Individual Exercises
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The method mapNums returns a HashMap that stores values of how many times a given key digit has appeared in an input String. Write a...
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Given is the number of edges and vertices in a directed graph. Using this information return the density of the graph.
Number of possible...
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Given an int, return a double of precisely half the initial value. The int will need to be converted into a double before any other...
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Roxy has written a method to count the number of people in her neighborhood, excluding children under 16 and individuals who are only...
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You’re an employee at an ice cream shop and your shop needs help organizing who’s in line. People usually come to this shop with their...
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Finish the code to complete the insertion sort method. Each comment denoted with //_________________ is a single line that needs to be...
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What's wrong with the following code? Assume both the interface and class share the same package.
public interface Account { int...0
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Given a stack with Integers, write a function that pops the top two numbers from the stack, adds them together and pushes the result back...
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Octavia has given you a list of movies. She is tired of deciding what to watch by name and now wants to be able to pick them by the...
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You are in charge of keeping student records. Those records are recorded in a hash map that uses a student's ID number as the key in...
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The LinearNode class is used to represent the individual nodes in a linear LinkedList. This particular LinkedList is doubly linked....
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Mars' new colony needs your help. This morning, a flurry of distress signals reached Earth, each encrypted with a secret message....
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The mere presence of oversized arrays makes Priscilla Perfect sick to her stomach. Such wasted space is an imperfection she cannot bear....
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Use the following recursive method:
public int mysteryMethod(int n) { if (n < 0) { return 5; } else { return mysteryMethod(n - 1) +...0
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Complete the hashing algorithm for a hash table so that it functions using open addressing. Remember to store both keys and values in...
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Priscilla Perfect detests imperfection (hence the name). Write a program to analyze a given array and return true if the array is worthy...
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In mathematics, the Perrin Numbers are defined by the recursion relation
P(n) = P(n - 2) + P(n -3) for n > 2
with initial values
P(0)...
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[Based on an exercise at https://codeworkout.cs.vt.edu/]
Given two int arrays a and b, each with two elements, return a new array with...
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Write a method quicksort that takes in an ArrayList of integers and returns them in ascending order, using a quicksort style of sorting....
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Write an algorithm that takes an ArrayList and uses a recursive binary search to return both the index of a given String, or -1 if the...
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As a wild publicity stunt May Tricks has made her Middletown store disappear! You have no idea how she did this or if the store will ever...
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Since May Tricks has proved to be a very unpredictable client you have decided to take extra precautions. By creating a remove vertex...
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Given a string str and an int n, return a string made of the first n characters of the string, followed by the first n - 1 characters of...
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[Based on an exercise at https://codeworkout.cs.vt.edu/]
Given an array of Strings, return a single String that is made up of all strings...