// output of ./demo/comb/perm-star-inv-demo.cc: // Description: //% Inverse star transposition permutations //% via permutations by prefix reversals. arg 1: 4 == n [Number of elements to permute n>0] default=4 1: [ . 1 2 3 ] (0, 0) 2: [ 1 . 2 3 ] (0, 1) 3: [ 1 2 . 3 ] (1, 2) 4: [ . 2 1 3 ] (2, 0) 5: [ 2 . 1 3 ] (0, 1) 6: [ 2 1 . 3 ] (1, 2) 7: [ 2 1 3 . ] (2, 3) 8: [ . 1 3 2 ] (3, 0) 9: [ 1 . 3 2 ] (0, 1) 10: [ 1 2 3 . ] (1, 3) 11: [ . 2 3 1 ] (3, 0) 12: [ 2 . 3 1 ] (0, 1) 13: [ 2 3 . 1 ] (1, 2) 14: [ 2 3 1 . ] (2, 3) 15: [ . 3 1 2 ] (3, 0) 16: [ 1 3 . 2 ] (0, 2) 17: [ 1 3 2 . ] (2, 3) 18: [ . 3 2 1 ] (3, 0) 19: [ 3 . 2 1 ] (0, 1) 20: [ 3 2 . 1 ] (1, 2) 21: [ 3 2 1 . ] (2, 3) 22: [ 3 . 1 2 ] (3, 1) 23: [ 3 1 . 2 ] (1, 2) 24: [ 3 1 2 . ] (2, 3) ct=24