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New insertion algorithm WIP

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David Gailleton
2025-12-11 18:42:33 +01:00
committed by David Gailleton
parent 1463f3e14a
commit f5da9fac1f
7 changed files with 197 additions and 8 deletions
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98
algorithms/insertion/insertion.c Normal file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* insertion.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dgaillet <dgaillet@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/12/10 15:38:52 by dgaillet #+# #+# */
/* Updated: 2025/12/12 11:30:40 by dgaillet ### ########lyon.fr */
/* */
/* ************************************************************************** */
#include "push_swap.h"
static int nearest_below(t_stack *stack, t_stack *node, int len)
{
t_stack *nearest;
int nearest_i;
int i;
nearest = stack;
i = 1;
nearest_i = 0;
stack = stack->next;
while (i < len)
{
if (node->value - stack->value >= 0
&& node->value - stack->value <= node->value - nearest->value)
{
nearest_i = i;
nearest = stack;
}
stack = stack->next;
i++;
}
return (nearest_i);
}
static int lowest_stack(t_stack *stack, int len)
{
t_stack *lowest;
int lowest_i;
int i;
i = 1;
lowest_i = 0;
lowest = stack;
stack = stack->next;
while (i < len)
{
if (stack->value <= lowest->value)
{
lowest_i = i;
lowest = stack;
}
stack = stack->next;
i++;
}
return (lowest_i);
}
static int rb_to_insert(t_stack *stack_b, t_stack *stack_a, int b_len)
{
int i;
i = 0;
if (is_lowest(stack_b, stack_a, b_len))
return (lowest_stack(stack_b, b_len));
if (is_highest(stack_b, stack_a, b_len))
return (lowest_stack(stack_b, b_len) + 1);
return (nearest_below(stack_b, stack_a, b_len) + 1);
}
void insertion(t_stacks *stacks, int a_len, int b_len)
{
int temp;
if (a_len == 0)
{
iterate_fn(stacks, b_len, &pa);
a_len = b_len;
temp = lowest_stack(stacks->a, a_len);
optimal_rotate(stacks, temp, a_len, 'a');
return ;
}
if (b_len == 0)
pb(stacks);
else
{
temp = rb_to_insert(stacks->b, stacks->a, b_len);
optimal_rotate(stacks, temp, b_len, 'b');
pb(stacks);
}
//write(1, "pb\n", 3);
print_stacks(stacks, highest_stack_len(stacks), stacks->a, stacks->b);
insertion(stacks, a_len - 1, b_len + 1);
}