A permutation, also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list into a one-to-one correspondence S_i. A string of length N has N! permutation. You need to show all results.
ORDER is important !! You should display it in lexicographic order.
ex. N=3,
1 2 3
1 3 2
2 1 3
2 3 1
3 1 2
3 2 1
N
1<=N<=6
S_i is a sequence each element followed by a space.
S_1
S_2
.
.
.
S_N!
You still need to change line in the last line.