• Jan 31, 2023 •AustinLeath
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public class UserService { private UserRepository userRepository; public UserService(UserRepository userRepository) { this.userRepository = userRepository; } public User getUserById(long id) { try { return userRepository.getUserById(id); } catch (Exception e) { // Log the exception here System.out.println("An error occurred while fetching the user: " + e.getMessage()); return null; } } } public class UserRepository { public User getUserById(long id) throws Exception { // Database query to fetch the user if (id < 0) { throw new Exception("Invalid user id"); } // Return the user object return new User(id, "John Doe"); } } public class User { private long id; private String name; public User(long id, String name) { this.id = id; this.name = name; } public long getId() { return id; } public String getName() { return name; } }
• May 15, 2025 •AustinLeath
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import java.util.Arrays; public class Main { public static int findMinNonCreatableSum(int[] coins) { // Sort the array Arrays.sort(coins); // Initialize max creatable sum int maxCreatable = 0; // Iterate through coins for (int coin : coins) { // If current coin is greater than maxCreatable + 1, // we found our answer if (coin > maxCreatable + 1) { return maxCreatable + 1; } // Add current coin to maxCreatable maxCreatable += coin; } // If we can create all sums up to maxCreatable, // the answer is maxCreatable + 1 return maxCreatable + 1; } public static void main(String[] args) { int[] coins = {2, 9, 1, 2, 7}; int result = findMinNonCreatableSum(coins); System.out.println("Smallest sum that cannot be created: " + result); } }
• May 21, 2025 •AustinLeath
class main { public static boolean findDuplicates(int[] nums) { for(int i = 0; i < nums.length; i++) { for(int j = 0; j < i; j++) { if(nums[i] == nums[j]) { return true; } } } return false; } public static void main(String[] args) { int[] myArray = {1,3}; System.out.println(findDuplicates(myArray)); } }
• Oct 15, 2022 •CodeCatch
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public static String addBinary(){ // The two input Strings, containing the binary representation of the two values: String input0 = "1010"; String input1 = "10"; // Use as radix 2 because it's binary int number0 = Integer.parseInt(input0, 2); int number1 = Integer.parseInt(input1, 2); int sum = number0 + number1; return Integer.toBinaryString(sum); //returns the answer as a binary value; }
• Feb 1, 2022 •LeifMessinger
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//Leif Messinger //Solves wordle //Needs a list of wordle words, newline separated and 5 characters each import java.util.*; import java.io.File; import java.io.FileNotFoundException; class WordleSolver { public static void printPointer(int position){ for(int i = 0; i < position; ++i){ System.out.print(" "); } System.out.print("^"); } public static void main(String[] args) throws FileNotFoundException{ if(args.length < 1) return; File dictionary = new File(args[0]); Scanner sc = new Scanner(dictionary); ArrayList<String> possibleWords = new ArrayList<String>(); while(sc.hasNextLine()){ possibleWords.add(sc.nextLine()); } Scanner input = new Scanner(System.in); while(possibleWords.size() > 0){ //Choose a word out of the possible words final int randomIndex = (int)(Math.random() * possibleWords.size()); String chosenWord = possibleWords.get(randomIndex); possibleWords.remove(randomIndex); System.out.println("Is it correct?"); for(int i = 0; i < chosenWord.length(); ++i){ System.out.println(chosenWord); printPointer(i); System.out.println(" y/n?"); if(input.nextLine().toLowerCase().contains("y")){ //Filter by correct character for(int possibleWord = possibleWords.size() - 1; possibleWord >= 0; --possibleWord){ //Has to be backwards for removing entries, also has to be int not unsigned if(possibleWords.get(possibleWord).charAt(i) != chosenWord.charAt(i)){ possibleWords.remove(possibleWord); } } } } System.out.println("Is it misplaced?"); //Stores a count of every letter misplaced short[] misplacedCounts = new short[('z'-'a')+1]; //Praise be the garbage collector for(int i = 0; i < chosenWord.length(); ++i){ System.out.println(chosenWord); printPointer(i); System.out.println(" y/n?"); if(input.nextLine().toLowerCase().contains("y")){ //Filter to make sure there's at least as many letters as needed ++misplacedCounts[(chosenWord.charAt(i) - 'a') - 1]; for(int possibleWord = possibleWords.size() - 1; possibleWord >= 0; --possibleWord){ //Has to be backwards for removing entries, also has to be int not unsigned int count = 0; for(int j = 0; j < possibleWords.get(possibleWord).length(); ++j){ if(possibleWords.get(possibleWord).charAt(j) == chosenWord.charAt(i)) ++count; } //If there's not enough of the character that we need, then we remove that from the list of possible characters if(count < misplacedCounts[(chosenWord.charAt(i) - 'a') - 1]){ possibleWords.remove(possibleWord); } } //Also filter out words where that letter doesn't belong there for(int possibleWord = possibleWords.size() - 1; possibleWord >= 0; --possibleWord){ //Has to be backwards for removing entries, also has to be int not unsigned if(possibleWords.get(possibleWord).charAt(i) == chosenWord.charAt(i)){ possibleWords.remove(possibleWord); continue; //Breaks the current word and moves on in the loop } } } } } } }
• Nov 19, 2022 •CodeCatch
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import javax.mail.*; import javax.mail.internet.*; import java.util.*; public void postMail( String recipients[ ], String subject, String message , String from) throws MessagingException { boolean debug = false; //Set the host smtp address Properties props = new Properties(); props.put("mail.smtp.host", "smtp.example.com"); // create some properties and get the default Session Session session = Session.getDefaultInstance(props, null); session.setDebug(debug); // create a message Message msg = new MimeMessage(session); // set the from and to address InternetAddress addressFrom = new InternetAddress(from); msg.setFrom(addressFrom); InternetAddress[] addressTo = new InternetAddress[recipients.length]; for (int i = 0; i < recipients.length; i++) { addressTo[i] = new InternetAddress(recipients[i]); } msg.setRecipients(Message.RecipientType.TO, addressTo); // Optional : You can also set your custom headers in the Email if you Want msg.addHeader("MyHeaderName", "myHeaderValue"); // Setting the Subject and Content Type msg.setSubject(subject); msg.setContent(message, "text/plain"); Transport.send(msg); }