(int x, int y)
| 59 | // Union By Rank |
| 60 | |
| 61 | public boolean union(int x, int y) { |
| 62 | int xr = find(x), yr = find(y); |
| 63 | if (xr == yr) { |
| 64 | return false; |
| 65 | } else if (rank[xr] < rank[yr]) { |
| 66 | parent[xr] = yr; |
| 67 | } else if (rank[xr] > rank[yr]) { |
| 68 | parent[yr] = xr; |
| 69 | } else { |
| 70 | parent[yr] = xr; |
| 71 | rank[xr]++; |
| 72 | } |
| 73 | return true; |
| 74 | } |
| 75 | } |