//Given 2 positive int values, return the larger value that is in the range 10..20 inclusive, or return 0 if neither is in that range.

//max1020(11, 19) → 19
//max1020(19, 11) → 19
//max1020(11, 9) → 11

public int max1020(int a, int b) {
  if(a>=10 || a<=20){
    return a;
  }

  else if(b>=10 || b<=20){
    return b;
  }

  else if(a>b){
    return a;
  }

  else if(b>a){
    return b;
  }

  return 0;
}