# Questions tagged [homework]

Questions requesting help with school homework. This tag lets potential answerers know that they should GUIDE the student in solving the problem, rather than showing a complete solution. CAUTION: Before posting, consider that classmates may be tempted to reuse code from your post. (Read the tag wiki.)

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3k views

### How is my quarterly sales statistics program?

Am I making good use of a 2-D array? Is this code inefficient? I am supposed to receive input from 6 departments for 4 quarterly periods in Java. My assignment asks: Quarterly Sales Statistics ...
11k views

### Palindrome program with reverse method

I wrote a program for a college assignment, and I'd like to receive some pointers on making my code a little more efficient. The program should ask the end user to enter an integer. Use the <...
386 views

### Organizing semaphores into a pyramid

My homework was to organize semaphores into a pyramid. The task was accomplished, but I ended up with this long ugly conditional and was wondering if anyone can see a better way/algorithm to ...
52k views

### Book program with arrayList

I have this Book program that contains 2 classes: Book and Library. I have the Book class done, but need some help on the ...
12k views

### Singly linked-list with smart pointers

A few things: I tried to do it with smart pointers because I wanted to learn about them. I'm not sure I made the right choice of type, however (and started to regret it half-way through). This is ...
3k views

### Intro to Java - determine valid unique numbers

This is an assignment for an intro to Java course. It works with the test case given, but I would like to know if there is anything / a lot of things that should be different or could be better. ...
3k views

### Approximating sines and cosines using up to five terms of the Taylor series

I have one programming question: The sine and cosine of $x$ can be computed as follows: $\sin(x) = x - \frac{x^3}{3!} + \frac{x^5}{5!} - \frac{x^7}{7!} + \frac{x^9}{9!} - \dots$ ...
500 views

### Guessing a random number between a range of numbers

What is the general design pattern for declaring variables in a class? I have a homework assignment to create a simple Java program which asks the user for a range of two variables. The program then ...
957 views

### Print largest two integers from a stream

I'm writing a program for my intro to comp sci course where I'm supposed to prompt the user to enter a stream of integers, and then return the largest two. We were given the hint to use a scanner and ...
6k views

### Beginner Java Counter code

My professor wants me to do this: Write a number of interchangeable counters using the Counter interface below: ...
2k views

### Searching through a contact list for given criteria

I have been staring at this code for awhile now and I am thinking there is a way to optimize it (namely the if-else statement ...
774 views

### Exceptions to control data read flow

I previously posted a Reservoir-Sampling program, which was basically a test version of this one. This is an assignment. In the code below, I use RunTimeException ...
12k views

### Conversion of expression from Prefix to Postfix notation (Problem with precedence) [closed]

I have been attempting to write a code that converts Prefix expressions to Postfix expressions. So far here's what I have made (note that I am new and hence it may not be efficient!) ...
2k views

### Extracting numbers from a string into an ArrayList

This first stores a string as input, loops through it to extract all of the numbers into an ArrayList, then prints all of these numbers along with their sum and ...
419 views

### Grade report builder

I am starting out with Java programming and get limited feedback from my professor. Following is an assignment that I handed in, and just re-factored. I wanted to see if people with Java experience ...
2k views

### Battleship type game in Java

I made the code, and it works, but it uses many if conditions and it looks ugly. I would really appreciate it if someone could give me a hand by pointing me in the ...
202 views

### High School Java Class: Pong Project External Reviewer

It would be a huge help if you could tell me ways to make my code run smoother and if I could add more code to my program to make my program more unique. Panelball class: ...
4k views

### Creating and testing a Fraction class

The exercise is as follows: Create a class called Fraction that can be used to represent the ratio of two integers. Include appropriate constructors, properties, and methods. If the denominator ...
4k views

### Simple Pig Latin Translator

The goal of my assignment is simple: Write a program that converts a given text to "Pig Latin". Pig Latin consists of removing the first letter of each word in a sentence and placing that ...
1k views

### Printing all binary strings of length n

I have completed my homework with directions as follows: Declare and implement a class named Binary. This class will have a method named printB(int n) that prints all binary strings of length n. ...
256 views

### Primes Tester for speed performance

I was given a homework assignment in Java to create classes that find Prime number and etc (you will see in code better). ...
23k views

### Hash table implementation in Java

For class, I was asked to write a (linear probing) hash table in Java. (I was also asked to write a linear-chaining hash table, which is why I named this one ...
940 views

### Simple static integer stack

This question is about improving my C++ coding skills. I was asked to implement a simple static integer stack in C++ as an assignment. I've come up with the following code: ...
24k views

### Java multithreaded file server and client - emulate TCP over UDP

My task was similar to my last assignment but this time I had to do it with UDP instead of TCP. This basically means I had to emulate TCP over UDP. Multithreading ...
3k views

### Print character + the ASCII value, 10 pairs per line

My exercise was: Write a program that reads input as a stream of characters until encountering EOF. Have the program print each input character and its ASCII decimal value. Note that characters ...
49k views

### Java multi-thread file server and client

My task was to build a multi-thread file server and a client that can upload or download a named file over sockets. It is assumed that the client will finish after its operation and there is no need ...
233 views

### Where to start refactoring? [closed]

I am currently programming, but I messed up my code. What is the best way to clean this? buttonUitvoeren_Click_1: ...
1k views

### C for Nios-2 IRQ handling

Related: Nios 2 interrupt handler ...
135k views

### Finding repeating numbers in an array

I want to search through an array of n numbers and find the numbers that are repeated. So far I have this code, which does the job, but I find it to be a rather cumbersome method, but I can't seem to ...
945 views

### RPN Evaluator that writes the results to a text file

For homework, I had to write an RPN Evaluator and write the results to a text file. I've done all that, but it feels weird, like the writing to my results text file. It also doesn't feel efficient. ...
456 views

### Optimization of exponentiation

I'm writing some crypto code, and as part of it, we have to implement modular exponentiation. I have it working, both with the right-to-left binary method and with the Montgomery formula. While ...
485 views

Can anyone review my addMatrix() method to see if I am following the instructions correctly? These are the instructions: This is a ...
3k views

### Turning an array of words into a random license plate

This is an assignment question from school: Write a method called licencePlate that takes an array of objectionable words and returns a random licence plate that ...
1k views

### Printing a 2D array

The problem presented to me: Declare a two-dimensional array of ints in main. Write a method to read in the size of each dimension, allocate memory for the array and return it (DON'T DO THIS IN ...
9k views

### Simple array-based Stack class in Java

I have created a simple array-based Stack class with some methods like the actual Stack in Java. I am testing this for mistakes, but since I am learning Java, my tests may not be as comprehensive as ...
176 views

### Ordinary Data Processing Task in Haskell: Vague Misgivings

This is an ordinary data processing task: read a list of dates and amounts (for example, deposits and withdrawals from a bank account) and report the date on which the lowest balance was recorded and ...
29k views

### Simple C++ function to determine the circumference and area of a circle

First off I would like to state that this is a homework assignment. However, I am not looking for you to complete anything for me. I code I am posting is the completed homework assignment. However, ...
2k views

### Format names to title case

So I'm writing a program to format names to title case and display them in alphabetic order. Any advice please? And how can i add more methods? ...
8k views

### Payroll calculator

First I tried to fetch this program as close to pseudo code where I must follow all imported items, all method definitions, and all defined variables; anything else was my choice. After I created ...
821 views

### Nearest Neighbour classification algorithm

The following code is from a university assignment of mine to write a classification algorithm (using nearest neighbour) to classify whether or not a given feature set (each feature is the frequency ...
3k views

### HashSet and TreeSet

I got some homework in which I had to take the novel War and Peace and put it into a HashSet and TreeSet respectively. I had to time it, to check differences and my question is whether my ...
8k views

### Producer-consumer in C using pthread_barrier

We're preparing for an exam at the moment, and our lecturer has given us a sample problem to work on. I have it completed, but would like to know a) If it is actually doing what it's supposed to, and ...
1k views

### C inner product function without using array subscripting

As part of a question designed to help us understand the relationship between pointers and arrays in C, I've been asked to write an inner product function that doesn't use any array subscripting. Here'...
469 views

### Scheme, first timer first program, simple list removal technique

I have started my hand at writing some scheme code. I am trying to get the first n primes. I plan to do so but first getting a list from 2 to ...
459 views

### Displaying a certain element among inputted numbers

I prompt the user for 9 numbers, store those numbers in 9 pointers and display the element 2. It seem to work just fine, but am I forgetting something? Can I improve it but keep it simple? I'm just a ...
259 views

### Finding the cheapest one-way air flight fare

I'm doing a sort of exercise where I'm given a question, and I have to answer it by writing an SQL query using a database that I was given. This is the question: What is the cheapest fare for a ...
295 views

### PHP function to compare two Roman numerals

This was for an assignment. I had to write a function to compare two roman numerals. This had to return true only if the second number was larger than the first and ...
17k views

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