| 4 | import java.util.Random; |
| 5 | |
| 6 | public class Skewb { |
| 7 | static short[][] ctm = new short[360][4]; |
| 8 | static short[][] cpm = new short[12][4]; |
| 9 | static short[][] com = new short[2187][4]; |
| 10 | static byte[] ctd = new byte[360]; |
| 11 | static byte[] cd = new byte[12 * 2187]; |
| 12 | static int[] seq = new int[12]; |
| 13 | private static String[] suff = {"'", ""}; |
| 14 | static Random r = new Random(); |
| 15 | |
| 16 | static void init() { |
| 17 | /* center |
| 18 | * 0 |
| 19 | * 4 1 2 3 |
| 20 | * 5 |
| 21 | */ |
| 22 | int[] arr = new int[8]; |
| 23 | for (int i = 0; i < 360; i++) |
| 24 | for (int j = 0; j < 4; j++) { |
| 25 | Utils.idxToPerm(arr, i, 6, true); |
| 26 | switch (j) { |
| 27 | case 0: Utils.circle(arr, 2, 5, 3); break; //R |
| 28 | case 1: Utils.circle(arr, 0, 3, 4); break; //U |
| 29 | case 2: Utils.circle(arr, 1, 4, 5); break; //L |
| 30 | case 3: Utils.circle(arr, 0, 1, 2); break; //F |
| 31 | } |
| 32 | //if (i == 0) System.out.println(j+": "+ Arrays.toString(arr)); |
| 33 | ctm[i][j] = (short) Utils.permToIdx(arr, 6, true); |
| 34 | } |
| 35 | /* corner |
| 36 | * 4 |
| 37 | * 0 1 |
| 38 | * 3 |
| 39 | * 5 6 |
| 40 | * 2 |
| 41 | */ |
| 42 | for (int i=0; i<12; i++) { |
| 43 | for (int j = 0; j < 4; j++) { |
| 44 | Utils.idxToPerm(arr, i, 4, true); |
| 45 | switch (j) { |
| 46 | case 0: Utils.circle(arr, 1, 2, 3); break; //R |
| 47 | case 1: Utils.circle(arr, 0, 1, 3); break; //U |
| 48 | case 2: Utils.circle(arr, 2, 0, 3); break; //L |
| 49 | case 3: Utils.circle(arr, 0, 2, 1); break; //F |
| 50 | } |
| 51 | cpm[i][j] = (short) Utils.permToIdx(arr, 4, true); |
| 52 | } |
| 53 | } |
| 54 | for (int i = 0; i < 2187; i++) { |
| 55 | for (int j = 0; j < 4; j++) { |
| 56 | Utils.idxToOri(arr, i, 8, true); |
| 57 | switch (j) { |
| 58 | case 0: //R |
| 59 | Utils.circle(arr, 1, 2, 3); |
| 60 | arr[6]++; arr[1] += 2; arr[2] += 2; arr[3] += 2; |
| 61 | break; |
| 62 | case 1: //U |
| 63 | Utils.circle(arr, 0, 1, 3); |