Description

This asm program checks whether or not the data given as input is a sequence of the form: (permutation of M, 0, permutation of M, 0, ..., permutation of M, 0) for some set M \in {1...255}

Example correct sequences: (0) (0, 0) (1, 2, 0, 1, 2, 0) (1, 2, 0, 2, 1, 0)

Example incorrect sequences: () (1) (1, 1, 0) (1, 2, 0, 1, 0) (1, 2, 0, 1, 3, 0)

Each byte of the data is interpreted as an 8-bit unsigned number.

Compiling

nasm -f elf64 -o sequence.o sequence.asm ld --fatal-warnings -o sequence sequence.o