Method find

src/class195/Code08_Forest1.java:82–87

(int i)

	}

	public static int find(int i) {
		if (i != father[i]) {
			father[i] = find(father[i]);
		}
		return father[i];
	}

	public static void build(int u, int fa) {
		dep[u] = dep[fa] + 1;