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| author | Charles <sircharlesaze@gmail.com> | 2020-05-09 12:31:50 +0200 |
|---|---|---|
| committer | Charles <sircharlesaze@gmail.com> | 2020-05-09 12:31:50 +0200 |
| commit | 02abc030a68cb2fdd2f21c96db830ec8cb9176ad (patch) | |
| tree | 0c2d67c94a3618639fc2cd29d8bc78820e41c254 /src/algo/ft_qsort.c | |
| parent | b5124347359833fcde33452978c62133879c6c9e (diff) | |
| parent | 3a2d19df9e509d0b015c786eb02f8315ff0ad91c (diff) | |
| download | libft-02abc030a68cb2fdd2f21c96db830ec8cb9176ad.tar.gz libft-02abc030a68cb2fdd2f21c96db830ec8cb9176ad.tar.bz2 libft-02abc030a68cb2fdd2f21c96db830ec8cb9176ad.zip | |
Merge remote-tracking branch 'origin/minishell'
Diffstat (limited to 'src/algo/ft_qsort.c')
| -rw-r--r-- | src/algo/ft_qsort.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/src/algo/ft_qsort.c b/src/algo/ft_qsort.c index 9bcfcdf..0c1c0f7 100644 --- a/src/algo/ft_qsort.c +++ b/src/algo/ft_qsort.c @@ -6,12 +6,19 @@ /* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */ /* +#+#+#+#+#+ +#+ */ /* Created: 2020/01/19 07:25:51 by cacharle #+# #+# */ -/* Updated: 2020/02/10 02:55:14 by cacharle ### ########.fr */ +/* Updated: 2020/04/04 22:10:29 by charles ### ########.fr */ /* */ /* ************************************************************************** */ #include "libft_algo.h" +/* +** \brief Helper to create a new range +** \param lo Lower bound +** \param hi Higher bound +** \return Range struct (not allocated) +*/ + static t_ftrange ft_range_new(int lo, int hi) { t_ftrange range; @@ -21,6 +28,16 @@ static t_ftrange ft_range_new(int lo, int hi) return (range); } +/* +** \brief Array partitionning, +** takes a pivot and place every element lower than it before +** and every element greater after +** \param base Partitioned array +** \param range Lower and upper bound +** \param width Single element size +** \param compar Comparison function +*/ + static int ft_qsort_partition(void *base, t_ftrange range, size_t width, t_ftcompar_func compar) { @@ -43,6 +60,14 @@ static int ft_qsort_partition(void *base, t_ftrange range, return (p); } +/* +** \brief Qsort recursion function +** \param base Array to sort +** \param range Lower and upper bound which define the area to sort +** \param width Single element size +** \param compar Comparision function +*/ + static void ft_qsort_rec(void *base, t_ftrange range, size_t width, t_ftcompar_func compar) { @@ -55,6 +80,14 @@ static void ft_qsort_rec(void *base, t_ftrange range, ft_qsort_rec(base, ft_range_new(pivot + 1, range.hi), width, compar); } +/* +** \brief Sort an array using the Quick sort algorithm +** \param base Array to sort +** \param nel Number of element in the array +** \param width Size of each element +** \param compar Comparision function +*/ + void ft_qsort(void *base, size_t nel, size_t width, t_ftcompar_func compar) { |
