Permutations N=4
Could use backtracking or other algorithm to generate sorted numbers. Second chance !
Start file
1234
End file
1234
1243
1324
1342
1423
1432
2134
2143
2314
2341
2413
2431
3124
3142
3214
3241
3412
3421
4123
4132
4213
4231
4312
4321
View Diff
1a2,24
> 1243
> 1324
> 1342
> 1423
> 1432
> 2134
> 2143
> 2314
> 2341
> 2413
> 2431
> 3124
> 3142
> 3214
> 3241
> 3412
> 3421
> 4123
> 4132
> 4213
> 4231
> 4312
> 4321
Solutions by @thasso23:
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