CSC300: QuickUnion [5/10] |
01 |
public int find(int p) { int root = p; while (root != id[root]) root = id[root]; return root; } public void union(int p, int q) { int pid = find(p); // loser int qid = find(q); // champion if (pid == qid) return; id[pid] = qid; count--; } |
Output
10[0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 4 3: 9[0, 1, 2, 3, 3, 5, 6, 7, 8, 9] 3 8: 8[0, 1, 2, 8, 3, 5, 6, 7, 8, 9] 6 5: 7[0, 1, 2, 8, 3, 5, 5, 7, 8, 9] 9 4: 6[0, 1, 2, 8, 3, 5, 5, 7, 8, 8] 2 1: 5[0, 1, 1, 8, 3, 5, 5, 7, 8, 8] 8 9: connected 5 0: 4[0, 1, 1, 8, 3, 0, 5, 7, 8, 8] 7 2: 3[0, 1, 1, 8, 3, 0, 5, 1, 8, 8] 6 1: 2[1, 1, 1, 8, 3, 0, 5, 1, 8, 8] 1 0: connected 6 7: connected N= 128 Union= 0.001 [Infinity] Connected= 0.000 [ NaN] N= 256 Union= 0.000 [ 0.000] Connected= 0.000 [ NaN] N= 512 Union= 0.000 [ NaN] Connected= 0.000 [ NaN] N= 1,024 Union= 0.000 [ NaN] Connected= 0.001 [Infinity] N= 2,048 Union= 0.001 [Infinity] Connected= 0.002 [ 2.000] N= 4,096 Union= 0.001 [ 1.000] Connected= 0.003 [ 1.500] N= 8,192 Union= 0.004 [ 4.000] Connected= 0.014 [ 4.667] N= 16,384 Union= 0.023 [ 5.750] Connected= 0.108 [ 7.714] N= 32,768 Union= 0.120 [ 5.217] Connected= 0.610 [ 5.648] N= 65,536 Union= 0.529 [ 4.408] Connected= 2.552 [ 4.184] N= 131,072 Union= 3.390 [ 6.408] Connected= 18.097 [ 7.091] N= 262,144 Union= 17.161 [ 5.062] Connected= 90.506 [ 5.001]
Union is linear, Connected is linear