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ft_apply_rule_rotate.c
executable file
·54 lines (48 loc) · 1.56 KB
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ft_apply_rule_rotate.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_apply_rule_rotate.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: skarunat <skarunat@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/06/29 11:25:40 by skarunat #+# #+# */
/* Updated: 2023/08/05 18:22:44 by skarunat ### ########.fr */
/* */
/* ************************************************************************** */
#include "push_swap.h"
int ft_rotate(t_stack **stack)
{
t_stack *head;
t_stack *tail;
if (ft_get_size(*stack) < 2)
return (-1);
head = *stack;
tail = ft_last_node(head);
*stack = head->next;
head->next = NULL;
tail->next = head;
return (0);
}
int ft_ra(t_stack **stack_a)
{
if (ft_rotate(stack_a) == -1)
return (-1);
ft_putendl_fd("ra", 1);
return (0);
}
int ft_rb(t_stack **stack_b)
{
if (ft_rotate(stack_b) == -1)
return (-1);
ft_putendl_fd("rb", 1);
return (0);
}
int ft_rr(t_stack **stack_a, t_stack **stack_b)
{
if ((ft_get_size(*stack_a) < 2) || (ft_get_size(*stack_b) < 2))
return (-1);
ft_rotate(stack_a);
ft_rotate(stack_b);
ft_putendl_fd("rr", 1);
return (0);
}