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| author | Charles Cabergs <me@cacharle.xyz> | 2020-08-02 11:05:33 +0200 |
|---|---|---|
| committer | Charles Cabergs <me@cacharle.xyz> | 2020-08-02 11:05:33 +0200 |
| commit | 5d2f925b20ceaea4122c59d2d2c4e7d4ae991fde (patch) | |
| tree | 80911dc3c32e9f230750e7e1042d413dfb6efab2 /src/algo/ft_qsort.c | |
| parent | ee32953ea79616e72f5428cdf40c834714a891c9 (diff) | |
| parent | b96b82194ccad2cddbb46b77aa1962a57c47ff44 (diff) | |
| download | libft-5d2f925b20ceaea4122c59d2d2c4e7d4ae991fde.tar.gz libft-5d2f925b20ceaea4122c59d2d2c4e7d4ae991fde.tar.bz2 libft-5d2f925b20ceaea4122c59d2d2c4e7d4ae991fde.zip | |
Merge branch 'master' into ft_ssl
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) { |
