Untitled

How choose random number within range, but weighted toward one part of that range? (in Java)
Pick a random number between 1-10
If it is <= 6
    Return a random number between 1-5
Else
    Return a random number between 6-10
EndIf

java.utils.Random randomGenerator = new java.utils.Random();
int random = randomGenerator.nextInt(11);
if(random <= 6) { //This is 20% more
    random = randomGenerator.nextInt(5) + 1;
} else {
    random = randomGenerator.nextInt(5) + 6;
}

public int weightedRandom() {
  int rand = Math.floor(Math.random() * 5 + 1) // From 1 to 5
  if (Math.random() >= 0.6) {
    ++rand;
  }
  return rand;
}

float sum;
do {
   sum = rollThreeDice(); // returns 3 to 18, with an average is 10.5
   sum -= 10.5;           // Now the range is 0 to 7.5, with the lower end being more likely.
   } while(sum < 0);
return sum;

int x = (int) (number - (Math.random() - Math.random())
                    * Math.random() * number);