package Ġcom . wl Ċ Ċ import Ġcom . wl . bing o . B ingo Ċ import Ġjava . util . concurrent . Thread Local Random Ċ Ċ class ĠB ingo Int Weighted Lot tery No Re pet itions Test Ġ: ĠWeight ed Lot tery No Re pet itions TestBase () Ġ{ ĊĠĠĠ Ġoverride Ġfun Ġweighted Lot tery ( weights : ĠDouble Array , Ġrandom : Ġ() Ġ-> ĠThread Local Random ) Ġ= ĠB ingo ( weights , Ġrandom . invoke ()) Ċ } Ċ