Permutation

/pˌɜːmjuːtˈe‍ɪʃən/

/ˌpɝmjuˈteɪʃən/

Permutation

complete change in character or condition

the act of changing the arrangement of a given number of elements

act of changing the lineal order of objects in a group

an event in which one thing is substituted for another

Examples

1. Permutations is about arrangement .

2. Mathematically, permutation is special.

3. Not all permutations are possible.

4. Another fundamental class of techniques are permutation ciphers.