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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_rbtrotate_left.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: charles <charles.cabergs@gmail.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/26 18:03:35 by charles #+# #+# */
/* Updated: 2020/04/26 20:27:44 by charles ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft_rbt.h"
/*
** \brief Rotate a red-black tree to the left
** \param tree Pointer to Pointer to a red-black tree
**
** 5 10
** / \ / \
** 4 10 --> 5 11
** / \ / \
** 6 11 4 6
*/
void ft_rbtrotate_left(t_ftrbt **tree)
{
t_ftrbt *new_root;
t_ftrbt *tmp;
if (tree == NULL || *tree == NULL || (*tree)->right == NULL)
return ;
new_root = (*tree)->right;
tmp = new_root->left;
new_root->left = *tree;
(*tree)->right = tmp;
*tree = new_root;
}
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