Random Number Generator Biased To Numbers in the Middle of Range, Java, libGDX -

i designing game in libgdx drops different sized rocks user dodge.

my question: how can create method takes in low , high int value, , returns random number. however, want random number biased toward middle of range (similar normal distribution).

i method this: public int randbiasint(int low, int high) { }

something sort of should work...

public int getbiasedint(int min, int max) {     int rand = math.random() * max;     while (rand < min) {         rand = math.random();     }     int mid = (max / 2) - (min / 2);     int halfmid = mid / 2;     if (rand > mid) {         rand -= math.random() * halfmid;     } else {         rand += math.random() * halfmid;     }     return rand; } 

not prettiest, know. should acceptable desire...