Create a function that verifies if a number is even. If the number is even, the function should return true. If odd, the function should return false. The input will always be an integer. Write unit tests - all should pass.
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Create a function that verifies password complexity. In order for a password to be valid, it must have at least six characters, one upper case letter, one lowercase letter, and one number. The function will take a string as input and output a Boolean, representing whether the password is complex enough.
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A user will start off with 10 points and throughout the game, the user has the option to take a chance to double their points. Or, walk away with their current point value. If the user decides to gamble their points in the chance of doubling, the program should use randomness to decide whether the points get doubled or the user loses it all.
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Calculate the amount owed, given the water usage. It's time to calculate the water bill for your apartment. Your water bill consists of two parts. First, there is a minimum charge of $18.84. This includes 1,496 gallons of water, or two CCFs. One CCF is equal to 748 gallons. If you use more than the included two CCFs, you are charged an extra $3.90 per additional CCF. This means if you use 1800 gallons of water in a given month, you will be charged the minimum $18.84, as well as an additional $3.90 for the extra volume of water used. For simplicity, we're not including tax in these calculations.
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Write a Java class that represents a person. The Person class should have a first name, last name, and age attribute with their own getters and setters. It should also have functionality for the person to introduce themselves. Using the Person class, you will create several Person instances that introduce themselves.
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Create a program that tells us what day it is 100 days from today.
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Each year every student must volunteer for at least two events. In this challenge, the school needs to find out which students still need to finish their volunteering. In starter code file, we have a list of students as well as a map that contains each event with the students that attended that event. Your job is to implement the find with incomplete events function.
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Let's play a word game. Each letter in a word is worth a certain number of points. To calculate the score for a word, you add up the points of each letter, the bigger the score, the better. For this challenge you will create an algorithm that calculates the score for a given word. In the exercise files, we have a map called letter points that contains mappings from each valid letter to an associated point value. If a given character is not in the map, it gets zero points.
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Let's say you work at a retail store. There's a sale and items are marked off at different rates. In this challenge, can you identify the least expensive item in a collection? It's the end-of-year sale and items in the store are marked off at varying rates. Each store item has a name, retail price and discount. As a part of this challenge, you'll model the store item objects using Java. Then you'll create an algorithm that calculates the least expensive store item in a collection of items.
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You want to start investing, so you decide for every purchase, you'll invest the change. In this challenge, your job is to figure out the average amount invested per purchase. This month, you decided to invest the leftover change from each purchase into the stock market. For example, when you purchase your $5.20 coffee, you put 73 cents into your investment account. Given a list of each purchase made, your challenge is to create a function that returns the average amount you invested in the stock market. To start you off, we have a main class that has a list of purchases. We could create a class to represent a given purchase and make a more elaborate object but to keep things simple, we'll use a double to represent the cost of each purchase. Your job is to implement calculate average change invested.
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An elevator can move up and down visiting floors to pick people up and drop people off along the way. Think you can simulate an elevator? Most of the time in software development, you won't be creating the program from scratch. So in this challenge, you'll be tasked to implement a few functions to simulate an elevator. Let's take a look Here we have our elevator class that keeps track of the current floor and the elevator direction. Remember, when an elevator starts going up, it continues to go up until there are no drop-off or pickup requests in that direction. Our program also keeps track of the people waiting with the request paths map. These are the requested paths that people are waiting to take. The key is the starting floor and the value is all the destination floors requested from that starting floor. Once the people at a given floor have boarded the elevator, the current destinations array keeps track of the floors the elevator will visit by setting the value at the appropriate index to true. Your job is to implement the process floor, call elevator and move elevator functions. We also have a main function that provides an easy way to manually test your elevator implementation.
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It's the holidays, your family's in town and you just played a few rounds of a guessing game. Can you write a program that identifies the winner and also prints out the final scores in order? The game had a series of rounds and during each round, a given player and their partner got a series of points. Given the team results from each round, your challenge is to write a program that automatically determines the overall winner and prints out the final score results in descending order. We start you off with a bit of sample code with the team class for representing each team as well as the main class for running your program. We also have a utility function in team utils that generates and sets some sample round scores for each team. Your challenge is to implement the reveal results function so that it prints out the winner as well as the rest of the game results in descending order.
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Many developers extend their program's functionality by calling APIs. So in this challenge, you'll use an API to tell some jokes with Java. In order to create more complex applications, many developers extend their programs functionality by calling APIs. An API is an application programming interface and it allows you to access and manipulate data from external programs created by other developers. In this challenge you'll create a joke generator. You should use a joke generator API to come up with the jokes. Your program should call this API and display the joke to the user.
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You have to send a secret text file to a fellow employee but they don't have the same security clearance as you. So in this challenge, you'll write a program that redacts a list of words from a given text file. The program should read in the original file and create a new file with the same contents. But the redacted words should be overwritten with the word redacted in all uppercase.
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It's Friday night and there's a concert downtown. Before they let anyone in, security needs to make sure each person reserved a ticket in advance. Let's help them out with this challenge. Security has a CSV file with each ticket holder name along with the number of tickets they bought. Your challenge is to create a program that imports the CSV and checks if a given person bought a ticket, as well as how many tickets they bought. If the person is not on the list or they did not buy enough tickets for their whole party, they should not be let in.
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