Question

How do I separate the method into different class? I try separate the testing and method class into 2 different class. And when I test it, it said that the method is undefined. And it ask me to create the method in the main class. I don't know what is the problem.

This is the access to the code https://repl.it/@Teptaikorn/test

Thank you very much

MazeSolver.java MazeTerster.... TwoDim AutoA... testfile.txt Main.java x > 0 N Binary TreeN... X LinkedBinary... Maze.java 1 class Main { //Testing Class public static void main(String[] args) { int[] arg = { 13, 2, 13 }; int[] sum = { 9, 7, 11, 15 }; for (int i = 0; i < arg.length; i++) { System.out.print(arg[i] + " "); System.out.println(); System.out.println("The single number in the array is " + singleNumber(arg)); int[] res = twoSum ( sum, 9); System.out.println("The two sum solution is "); for (int i = 0; i < res.length; i++) { System.out.print(res[i] + " "); //Method Class public static int singleNumber(int[] nums) { int result = 0; for (int i = 0; i < nums.length; i++) { result ^= nums[i]; return result; public static int[] twoSum(int[] nums, int target) throws IllegalArgumentException { for (int i = 0; i < nums.length; i++) { for (int j = 0; j < nums.length; j++) { if (nums[j] == target - nums[i]) { return new int[] { i, j }; throw new IllegalArgumentException ("No two sum solution");

Answer 1

/*
 *  Testing.java file
 */

class Testing {
  
  public int singleNumber(int[] nums) {
    int result = 0;
    for (int i = 0; i < nums.length; i++) {
      result ^= nums[i];
    }
    return result;
  }

  public int[] twoSum(int[] nums, int target) throws IllegalArgumentException {
    for (int i = 0; i < nums.length; i++) {
      for (int j = 0; j < nums.length; j++) {
        if (nums[j] == target - nums[i]) {
          return new int[] {i, j};
        }
      }
    }
    throw new IllegalArgumentException("No two sum solution");
  }
}





/*
 *  Main.java file
 */

class Main{
  public static void main(String[] args) {
    Testing solver = new Testing();
    
    int [] arg = {13, 2, 13};
    int [] sum = {9,7,11,15};
    
    for (int i = 0; i < arg.length; i++){
      System.out.print(arg[i] + " ");
    }
    System.out.println();
    System.out.println("The single number in the array is " + solver.singleNumber(arg));

    int [] res = solver.twoSum(sum, 9);
    System.out.println("The two sum solution is ");
    for (int i = 0; i < res.length; i ++){
      System.out.print(res[i] + " ");
    }
  }
}

Files D e https://MutedIdenticalWrapper.imtusharsharma.repl.run Main.java B saved 1 * 2 * Main.java file */ Main.java Testing.java class Main{ public static void main(String[] args) { Testing solver = new Testing();|| OpenJDK Runtime Environment (build 11.0.6+10-post-Ubuntu-lubungi 118.04.1) ? javac -classpath .:/run dir/junit-4.12.jar:target/dependency/* -d . Main.java Testing.java ? java -classpath .:/run dir/junit-4.12.jar:target/dependency/* Main 13 2 13 The single number in the array is 2 Exception in thread "main" java.lang.IllegalArgumentException: N o two sum solution at Testing. twoSum (Testing.java:19), at Main.main (Main.java:14) exit status 1 int [] arg = {13, 2, 13}; int [] sum = {9,7,11,15}; for (int i = 0; i < arg.length; i++){ System.out.print(arg[i] + " "); } System.out.println(; System.out.println("The single number in the array is " + solver.singleNumber(arg)); int (res = solver. twoSum( sum, 9); System.out.println("The two sum solution is "); for (int i = 0; i < res.length; i++){ System.out.print(res[i] + " "); 24 }

Note: The code is split into two classes, it is advised to put each of the class in a separate file having the same name as the name of the class.