// output of ./demo/comb/necklace-gray3-demo.cc: // Description: //% Generate Gray code (max 3 changes per update) for necklaces arg 1: 8 == N [Length of words (n>=1)] default=8 arg 2: 2 == k [Number of different beads (k>=2)] default=2 1: [ . 1 1 1 1 1 1 1 ] 2: [ . 1 1 . 1 1 1 1 ] 3: [ . 1 . 1 . 1 1 1 ] <<+2 4: [ . 1 . 1 1 . 1 1 ] <<+1 5: [ . 1 . 1 1 1 1 1 ] 6: [ . . . 1 1 1 1 1 ] 7: [ . . . 1 1 1 . 1 ] 8: [ . . . 1 1 . . 1 ] 9: [ . . . 1 1 . 1 1 ] 10: [ . . . 1 . . 1 1 ] 11: [ . . . 1 . 1 . 1 ] <<+1 12: [ . . . 1 . 1 1 1 ] 13: [ . . . . . 1 1 1 ] 14: [ . . . . . 1 . 1 ] 15: [ . . . . . . . 1 ] 16: [ . . . . . . 1 1 ] 17: [ . . . . 1 . 1 1 ] 18: [ . . . . 1 . . 1 ] 19: [ . . . . 1 1 . 1 ] 20: [ . . . . 1 1 1 1 ] 21: [ . . 1 . 1 1 1 1 ] 22: [ . . 1 . 1 1 . 1 ] 23: [ . . 1 . 1 . 1 1 ] <<+1 24: [ . . 1 . . 1 . 1 ] <<+2 25: [ . . 1 . . 1 1 1 ] 26: [ . . 1 1 . 1 1 1 ] 27: [ . . 1 1 . 1 . 1 ] 28: [ . . 1 1 1 . 1 1 ] <<+2 29: [ . . 1 1 1 1 . 1 ] <<+1 30: [ . . 1 1 1 1 1 1 ] ct=30 sxct =10