Hashmap

import java.util.Map;

HashMap<int[], boolean[]> elementMap = new HashMap<int[], boolean[]>();

void fillMap(){
  boolean[] b = {false, false};
  for (int r=0; r<9; r++) {
    for (int k=0; k<9; k++) {
      int[] coord = {r, k};
      elementMap.put(coord, b);
    }
  }

  for(boolean[] bool: elementMap.values()){
    println("1st boolean: " + bool[0] + " 2nd boolean: " + bool[1]);
  }

  for(int[] i: elementMap.keySet()){
    println("1st integer: " + i[0] + " 2nd integer: " + i[1]);
  }

  int[] test = {2,2};
  boolean[] result = elementMap.get(test);
  //println("For matrixelement (2,2): 1st: " + result[0] + " 2nd: " + result[1]);
}

void setup() {
  fillMap();
}