62 lines
1.6 KiB
C
Executable file
62 lines
1.6 KiB
C
Executable file
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* reverse.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: rparodi <rparodi@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/02/13 12:08:06 by rparodi #+# #+# */
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/* Updated: 2024/03/06 11:55:32 by rparodi ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "../includes/push_swap.h"
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static int reverse(t_list **stack)
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{
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t_list *head;
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t_list *tail;
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if (ft_lstsize(*stack) < 2)
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return (-1);
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head = *stack;
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tail = ft_lstlast(head);
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while (head)
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{
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if (head->next->next == NULL)
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{
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head->next = NULL;
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break ;
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}
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head = head->next;
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}
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tail->next = *stack;
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*stack = tail;
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return (0);
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}
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int rra(t_list **stack_a)
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{
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if (reverse(stack_a) == -1)
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return (-1);
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write(1, "rra\n", 4);
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return (0);
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}
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int rrb(t_list **stack_b)
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{
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if (reverse(stack_b) == -1)
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return (-1);
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write(1, "rrb\n", 4);
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return (0);
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}
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int rrr(t_list **stack_a, t_list **stack_b)
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{
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if ((ft_lstsize(*stack_a) < 2) || (ft_lstsize(*stack_b) < 2))
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return (-1);
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reverse(stack_a);
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reverse(stack_b);
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write(1, "rrr\n", 4);
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return (0);
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}
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