public int nextIdx() {
int res = currPair_;
if (pool_.size() == 1) {
currPair_ = -1;
res = pool_.firstInt();
} else if (pool_.size() == 0) {
String mssg = "pool.size() == 0";
LOG.error(this, mssg, "");
throw new KinGroupError(mssg);
} else if (currPair_ != -1) {
currPair_ = -1;
}
// else if (pool_.size() == 2) {
// res = random(pool_.firstInt(), pool_.lastInt());
// }
else {
Int2 pair = pairs_.removeFirstPair();
res = random(pair.b, pair.a);
currPair_ = pair.pair(res);
}
if (!pool_.removeInt(res)) {
String mssg = "!pool_.removeInt(res)";
LOG.error(this, mssg, "");
throw new KinGroupError(mssg);
}
return res;
}
public boolean hasNext() {
return (pool_.size() > 0);
}