private static BalancedTree<Integer, Integer> createRedBlackTreeAsComplete() {
Comparator<Integer> comp =
new Comparator<Integer>() {
public int compare(Integer o1, Integer o2) {
return o1 - o2;
}
};
BalancedTree<Integer, Integer> bt = new BalancedTree<Integer, Integer>(comp);
// for perfect balanced tree, we must create FULL tree which is greater
// than n (this is 2^20).
int k = (int) (Math.log(n) / Math.log(2));
int b = (int) Math.pow(2, k);
int i = 0;
while (b > 0) {
bt.insert(b, b);
for (int j = 1; j <= Math.pow(2, i) - 1; j++) {
bt.insert(b + 2 * b * j, b + 2 * b * j);
}
b = b / 2;
i++;
}
return bt;
}
private static BalancedTree<Integer, Integer> createRedBlackTree() {
Comparator<Integer> comp =
new Comparator<Integer>() {
public int compare(Integer o1, Integer o2) {
return o1 - o2;
}
};
BalancedTree<Integer, Integer> bt = new BalancedTree<Integer, Integer>(comp);
for (int i = 1; i <= n; i++) {
bt.insert(i, i);
}
return bt;
}