import "dart:core";

Stream<Map<int, int>> getRandomNumbers(int seed, int modulus, int increment, int multiplier, int max) async* {
  int prevxn = seed;
  int result = 0;

  for(int i = 1; i <= max; i++)
  {
    result = (multiplier*prevxn + increment) % modulus;
    yield {i : result};
    prevxn = result;
  }
}

void main() {
  int seed = 7;
  int modulus = 16;
  int increment = 3;
  int multiplier = 5;
  int maximum = 32;

  print("Calculating pseudorandom numbers:");
  print("x0: $seed, modulus:$modulus, step:$increment, multiplier:$multiplier, iteration count:$maximum");
  /* Print */
  getRandomNumbers(seed, modulus, increment, multiplier, maximum).listen((values) => print("x${values.keys.first} = ${values.values.first}"));
}