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Push_swap

Primeiro projeto da segunda fase da 42sp. Utilizando apenas duas stacks, o objetivo deste projeto é ordenar os números recebidos como parâmetro e imprimir os movimentos utilizados.

Execução

./push_swap N

  • N -> N números inteiros não repetíveis sendo MIN_INT ≤ N ≤ MAX_INT

Saída

O programa irá imprimir os comandos utilizados para ordenar os números

Movimentos

  • sa : swap a - swap the first 2 elements at the top of stack a. Do nothing if there is only one or no elements).
  • sb : swap b - swap the first 2 elements at the top of stack b. Do nothing if there is only one or no elements).
  • ss : sa and sb at the same time.
  • pa : push a - take the first element at the top of b and put it at the top of a. Do nothing if b is empty.
  • pb : push b - take the first element at the top of a and put it at the top of b. Do nothing if a is empty.
  • ra : rotate a - shift up all elements of stack a by 1. The first element becomes the last one.
  • rb : rotate b - shift up all elements of stack b by 1. The first element becomes the last one.
  • rr : ra and rb at the same time.
  • rra : reverse rotate a - shift down all elements of stack a by 1. The last element becomes the first one.
  • rrb : reverse rotate b - shift down all elements of stack b by 1. The last element becomes the first one.
  • rrr : rra and rrb at the same time.

Compilação

make compila o projeto make clean apaga os arquivos compilados make fclean apaga os arquivos e o programa

Checker

Para checar se o programa ordenou corretamente, pode ser utilizado o checker

ARGS="5 4 2 1"; ./push_swap $ARGS | ./checker $ARGS

Pyviz

pyviz é um visualizador do push_swap criado por o-reo

python3 pyviz.py `ruby -e "puts (-200..200).to_a.shuffle.join(' ')"`

Para rodar o pyviz, é necessário possuir o python e o tkinter.

Para instalar o tkinter: sudo apt-get install python3-tk.

https://github.com/o-reo/push_swap_visualizer

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