returns a random number among { 0 to count-1 } : Random « Development « Android

1. Android
2. Development
3. Random

returns a random number among { 0 to count-1 }

    
import java.util.Calendar;
import java.util.Random;

class CommonUtil {
  
  private static Random random = new Random(Calendar.getInstance().getTimeInMillis());
  
  /**
   * 
   * @param count
   * @return returns a random number among { 0 to count-1 }
   */
  public static short getRandomIndex(short count){
    int randomIndex = random.nextInt();
    short resultIndex = (short) (randomIndex % count);
    if(resultIndex < 0){
      resultIndex += count;
    }
    return resultIndex;
  }

}

   
    
    
    
  

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