Method UnionFind

java/Graphs/ConnectTheDots.java:10–17

(int size)

    int[] size;

    public UnionFind(int size) {
        this.parent = new int[size];
        this.size = new int[size];
        for (int i = 0; i < size; i++) {
            this.parent[i] = i;
        }
        Arrays.fill(this.size, 1);
    }

    public boolean union(int x, int y) {
        int repX = find(x);