Randomised objects are assigning themselves to more than one array location
- by Thaddeus Aid
this.size = 9;
this.populationSize = 10;
Random rand = new Random();
Integer[][] easy1 = new Integer[size][size];
easy1 = this.initializeEasy1(easy1);
this.sudokuArray = new Sudoku[this.populationSize];
for (int i = 0; i < this.sudokuArray.length; i++){
long seed = rand.nextLong();
System.out.println("" + seed);
this.sudokuArray[i] = new Sudoku(easy1, this.size, seed);
}
I am building an evolutionary sudoku solver and I am having a problem where the last Sudoku object is overwriting all the other objects in the array. Where in the code did I mess up?
/edit here is the constructor of the class
public Sudoku(Integer[][] givensGrid, int s, long seed){
this.size = s;
this.givens = givensGrid;
this.grid = this.givens.clone();
Random rand = new Random(seed);
System.out.println("Random " + rand.nextInt());
// step though each row of the grid
for (int i = 0; i < size; i++){
ArrayList<Integer> numbers = new ArrayList<Integer>();
numbers = this.makeNumbers(numbers);
// step through each column to find the givens and remove from numbers
for (int j = 0; j < size; j++){
if (this.grid[i][j] != 0){
numbers.remove(this.grid[i][j]);
}
}
// go back through the row and assign the numbers randomly
for (int j = 0; j < size; j++){
if (this.grid[i][j] == 0){
int r = rand.nextInt(numbers.size());
this.grid[i][j] = numbers.get(r);
numbers.remove(r);
}
}
}
System.out.println("=============");
System.out.println(this.toString());
}
