Added algo functions ft_qsort, ft_is_set, ft_memswap, ft_compar_int

6 files changed, 168 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 392b40c..eeba965 100644
--- a/Makefile
+++ b/Makefile
@@ -6,13 +6,15 @@
 #    By: cacharle <marvin@42.fr>                    +#+  +:+       +#+         #
 #                                                 +#+#+#+#+#+   +#+            #
 #    Created: 2019/10/08 15:45:53 by cacharle          #+#    #+#              #
-#    Updated: 2020/01/16 07:45:42 by cacharle         ###   ########.fr        #
+#    Updated: 2020/02/02 22:09:07 by cacharle         ###   ########.fr        #
 #                                                                              #
 # **************************************************************************** #
 
 LIB = ar rcs
 RM = rm -f
 
+INCLUDE_DIR = include
+
 CC = gcc
 CCFLAGS = -Wall -Wextra -Werror
 
@@ -25,7 +27,7 @@ SRC = ft_atoi.c ft_bzero.c ft_isalnum.c ft_isalpha.c ft_isascii.c ft_isdigit.c f
 		ft_striteri.c ft_strjoin.c ft_strlcat.c ft_strlen.c ft_strmap.c ft_strmapi.c \
 		ft_strncat.c ft_strncmp.c ft_strncpy.c ft_strnequ.c ft_strnew.c ft_strnstr.c \
 		ft_strrchr.c ft_split.c ft_strstr.c ft_substr.c ft_strtrim.c ft_tolower.c \
-		ft_toupper.c ft_strlcpy.c ft_calloc.c ft_strcount.c
+		ft_toupper.c ft_strlcpy.c ft_calloc.c ft_strcount.c ft_memswap.c ft_qsort.c
 OBJ = $(SRC:.c=.o)
 INCLUDE = libft.h
 
diff --git a/ft_compar_int.c b/ft_compar_int.c
new file mode 100644
index 0000000..848dc71
--- /dev/null
+++ b/ft_compar_int.c
@@ -0,0 +1,18 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_compar_int.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 08:24:43 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:27:38 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+int	ft_compar_int(const void *a, const void *b)
+{
+	return (*(int*)a - *(int*)b);
+}
diff --git a/ft_is_set.c b/ft_is_set.c
new file mode 100644
index 0000000..8e45b49
--- /dev/null
+++ b/ft_is_set.c
@@ -0,0 +1,31 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_is_set.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:17:15 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:21:12 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+t_bool	ft_is_set(void *base, size_t nel, size_t width,
+						t_ftcompar_func compar)
+{
+	size_t	i;
+
+	if (nel < 2)
+		return (TRUE);
+	ft_qsort(base, nel, width, compar);
+	i = 0;
+	while (i < nel - 1)
+	{
+		if (compar(base + (i * width), base + ((i + 1) * width)) == 0)
+			return (FALSE);
+		i++;
+	}
+	return (TRUE);
+}
diff --git a/ft_memswap.c b/ft_memswap.c
new file mode 100644
index 0000000..4abaa83
--- /dev/null
+++ b/ft_memswap.c
@@ -0,0 +1,29 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_memswap.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:56:43 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:22:17 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+void	ft_memswap(void *a, void *b, size_t size)
+{
+	t_byte	tmp;
+	t_byte	*cast_a;
+	t_byte	*cast_b;
+
+	cast_a = (t_byte*)a;
+	cast_b = (t_byte*)b;
+	while (size-- > 0)
+	{
+		tmp = cast_a[size];
+		cast_a[size] = cast_b[size];
+		cast_b[size] = tmp;
+	}
+}
diff --git a/ft_qsort.c b/ft_qsort.c
new file mode 100644
index 0000000..8c125a1
--- /dev/null
+++ b/ft_qsort.c
@@ -0,0 +1,64 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_qsort.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/19 07:25:51 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/19 08:28:32 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static t_ftrange	ft_range_new(int lo, int hi)
+{
+	t_ftrange range;
+
+	range.lo = lo;
+	range.hi = hi;
+	return (range);
+}
+
+static int			ft_qsort_partition(void *base, t_ftrange range,
+										size_t width, t_ftcompar_func compar)
+{
+	void	*pivot;
+	int		p;
+	int		i;
+
+	pivot = base + (range.hi * width);
+	p = range.lo;
+	i = range.lo - 1;
+	while (++i < range.hi)
+	{
+		if (compar(base + (i * width), pivot) < 0)
+		{
+			ft_memswap(base + (i * width), base + (p * width), width);
+			p++;
+		}
+	}
+	ft_memswap(pivot, base + (p * width), width);
+	return (p);
+}
+
+static void			ft_qsort_rec(void *base, t_ftrange range,
+										size_t width, t_ftcompar_func compar)
+{
+	int	pivot;
+
+	if (range.lo >= range.hi)
+		return ;
+	pivot = ft_qsort_partition(base, range, width, compar);
+	ft_qsort_rec(base, ft_range_new(range.lo, pivot - 1), width, compar);
+	ft_qsort_rec(base, ft_range_new(pivot + 1, range.hi), width, compar);
+}
+
+void				ft_qsort(void *base, size_t nel, size_t width,
+								t_ftcompar_func compar)
+{
+	if (width == 0 || nel < 2)
+		return ;
+	ft_qsort_rec(base, ft_range_new(0, nel - 1), width, compar);
+}
diff --git a/libft.h b/libft.h
index 6e767fd..f84c16e 100644
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/10/07 09:45:02 by cacharle          #+#    #+#             */
-/*   Updated: 2020/01/15 14:46:50 by cacharle         ###   ########.fr       */
+/*   Updated: 2020/02/02 22:09:47 by cacharle         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -19,6 +19,7 @@
 # define FALSE 0
 
 typedef unsigned char	t_byte;
+typedef int				t_bool;
 
 typedef struct		s_list
 {
@@ -33,6 +34,12 @@ void				*ft_memccpy(void *dest, const void *src, int c, size_t n);
 void				*ft_memmove(void *dst, const void *src, size_t len);
 void				*ft_memchr(const void *s, int c, size_t n);
 int					ft_memcmp(const void *s1, const void *s2, size_t n);
+void				ft_memswap(void *a, void *b, size_t size);
+
+/*
+** str
+*/
+
 size_t				ft_strlen(const char *s);
 char				*ft_strdup(const char *s);
 char				*ft_strcpy(char *dest, const char *src);
@@ -98,4 +105,18 @@ void				ft_lstiter(t_list *lst, void (*f)(void *));
 t_list				*ft_lstmap(t_list *lst, void *(*f)(void *),
 								void (*del)(void *));
 
+typedef struct
+{
+	int		lo;
+	int		hi;
+}			t_ftrange;
+
+typedef int	(*t_ftcompar_func)(const void*, const void*);
+
+t_bool		ft_is_set(void *base, size_t nel, size_t width,
+						t_ftcompar_func compar);
+void		ft_qsort(void *base, size_t nel, size_t width,
+						t_ftcompar_func compar);
+int			ft_compar_int(const void *a, const void *b);
+
 #endif