diff --git a/a.out b/a.out
deleted file mode 100755
index 5d54d14..0000000
Binary files a/a.out and /dev/null differ
diff --git a/check.sh b/check.sh
new file mode 100755
index 0000000..6c27d5d
--- /dev/null
+++ b/check.sh
@@ -0,0 +1 @@
+./push_swap $@ | ./checker_linux $@
diff --git a/checker_linux b/checker_linux
new file mode 100755
index 0000000..002d593
Binary files /dev/null and b/checker_linux differ
diff --git a/ft_bit_finder.c b/ft_bit_finder.c
index c8b63ca..39df024 100644
--- a/ft_bit_finder.c
+++ b/ft_bit_finder.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/11/23 17:31:10 by cchauvet          #+#    #+#             */
-/*   Updated: 2022/11/29 15:06:00 by cchauvet         ###   ########.fr       */
+/*   Updated: 2022/11/30 20:07:51 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -25,10 +25,5 @@ int	ft_bit_finder_left(int big, int tofind)
 
 int	ft_bit_finder_right(int big, int tofind)
 {
-	int	i;
-
-	i = 0;
-	while (i != ((int) sizeof(int) * 8 - 1) && ((big << i) & 1) != tofind)
-		i++;
-	return (i);
+	return ((int) sizeof(int) * 8 - 1 - ft_bit_finder_left(big, tofind));
 }
diff --git a/ft_bit_finder.o b/ft_bit_finder.o
index ae8cc9b..4ad5bf9 100644
Binary files a/ft_bit_finder.o and b/ft_bit_finder.o differ
diff --git a/ft_is_sorted.c b/ft_is_sorted.c
index 75c4140..3a95650 100644
--- a/ft_is_sorted.c
+++ b/ft_is_sorted.c
@@ -6,20 +6,20 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/11/29 14:41:08 by cchauvet          #+#    #+#             */
-/*   Updated: 2022/11/29 19:02:34 by cchauvet         ###   ########.fr       */
+/*   Updated: 2022/11/30 20:09:57 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "pushswap.h"
 
-int	ft_is_sorted(int *in)
+int	ft_is_sortee(int *in)
 {
 	unsigned int	*tab;
 	unsigned int	prev;
 	unsigned int	i;
 	int				shift;
 
-	shift = ft_bit_finder_right(ft_get_bit_min(in), 1) - 1;
+	shift = ft_bit_finder_right(ft_get_bit_min(in), 1);
 	tab = (unsigned int *) in;
 	prev = tab[0];
 	i = 1;
@@ -32,3 +32,8 @@ int	ft_is_sorted(int *in)
 	}
 	return (1);
 }
+
+int	ft_is_sorted(int *in)
+{
+	return (ft_bit_finder_right(ft_get_bit_min(in), 1) == 31);
+}
diff --git a/ft_is_sorted.o b/ft_is_sorted.o
index f7818e7..3168522 100644
Binary files a/ft_is_sorted.o and b/ft_is_sorted.o differ
diff --git a/ft_radix.c b/ft_radix.c
index 5bea940..d235595 100644
--- a/ft_radix.c
+++ b/ft_radix.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/11/15 18:16:31 by cchauvet          #+#    #+#             */
-/*   Updated: 2022/11/30 13:19:13 by cchauvet         ###   ########.fr       */
+/*   Updated: 2022/11/30 20:06:39 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,22 +14,32 @@
 
 void	ft_radix_sort(int *tab_a, int *tab_b)
 {
-	int	i;
+	int	tab_index;
+	int	loop_index;
+	int	shift;
 
 	while (!ft_is_sorted(tab_a))
 	{
-		i = ft_tablen(tab_a);
-		while (--i >= 0 && !ft_is_sorted(tab_a))
+		tab_index = ft_tablen(tab_a) - 1;
+		loop_index = tab_index;
+		shift = ft_bit_finder_right(ft_get_bit_min(tab_a), 1);
+		while (loop_index > 0 && !ft_is_sorted(tab_a))
 		{
-			if ((tab_a[i] >> (sizeof(int) * 8 -1) & 1) == 0)
+			if (tab_a[tab_index] >> shift & 1)
+			{	
 				ft_pb(tab_a, tab_b);
+				tab_index--;
+			}
 			else
 				ft_ra(tab_a);
+			loop_index--;
 		}
 		while (tab_b[0] != -1)
 			ft_pa(tab_a, tab_b);
-		i = ft_tablen(tab_a);
-		while (--i >= 0 && !ft_is_sorted(tab_a))
-			tab_a[i] = tab_a[i] << 1;
+		tab_index = ft_tablen(tab_a);
+		while (--tab_index >= 0 && !ft_is_sorted(tab_a))
+			tab_a[tab_index] = tab_a[tab_index] << 1;
 	}
+	free(tab_a);
+	free(tab_b);
 }
diff --git a/ft_radix.o b/ft_radix.o
index 498ab77..06bd29d 100644
Binary files a/ft_radix.o and b/ft_radix.o differ
diff --git a/ft_split.c b/ft_split.c
new file mode 100644
index 0000000..c512def
--- /dev/null
+++ b/ft_split.c
@@ -0,0 +1,92 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_split.c                                         :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2022/10/05 19:04:34 by cchauvet          #+#    #+#             */
+/*   Updated: 2022/10/28 19:23:45 by cchauvet         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static void	*ft_cancel(char **tab, size_t len)
+{
+	size_t	i;
+
+	if (tab != NULL)
+	{
+		i = 0;
+		while (i < len)
+		{
+			free(tab[i]);
+			i++;
+		}
+		free(tab);
+	}
+	return (NULL);
+}
+
+static size_t	ft_seglen(const char *s, char c)
+{
+	size_t	len;
+
+	if (s == NULL)
+		return (0);
+	len = 0;
+	while (*s != 0)
+	{
+		while (*s == c && *s != 0)
+			s++;
+		if (*s != 0)
+			len++;
+		while (*s != c && *s != 0)
+			s++;
+	}
+	return (len);
+}
+
+static char	**ft_segsplitter(char **tab, size_t len, const char *s, char c)
+{
+	size_t	tab_index;
+	size_t	let_index;
+	size_t	start;
+
+	tab_index = 0;
+	let_index = 0;
+	start = 0;
+	if (tab == NULL || s == NULL)
+		return (NULL);
+	while (tab_index < len)
+	{
+		while (s[let_index] == c && s[let_index] != 0)
+			let_index++;
+		start = let_index;
+		while (s[let_index] != c && s[let_index] != 0)
+			let_index++;
+		tab[tab_index] = ft_substr(s, start, let_index - start);
+		if (tab[tab_index] == NULL)
+			return (ft_cancel(tab, tab_index));
+		tab_index++;
+	}
+	return (tab);
+}
+
+char	**ft_split(const char *s, char c)
+{
+	size_t	len;
+	char	**tab;
+
+	if (s == NULL)
+		return (NULL);
+	len = ft_seglen(s, c);
+	tab = malloc((len + 1) * sizeof(char *));
+	if (tab == NULL)
+		return (NULL);
+	tab[len] = NULL;
+	if (ft_segsplitter(tab, len, s, c) == NULL)
+		return (NULL);
+	return (tab);
+}
diff --git a/main.c b/main.c
index e270826..7688a2e 100644
--- a/main.c
+++ b/main.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/11/09 17:10:47 by cchauvet          #+#    #+#             */
-/*   Updated: 2022/11/28 17:57:29 by cchauvet         ###   ########.fr       */
+/*   Updated: 2022/11/30 14:13:09 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -25,7 +25,7 @@ int	main(int argc, char *argv[])
 	{
 		if (!ft_isnum(argv[i]))
 		{
-			ft_putstr("Erreur: args doesn't containe only numbers !");
+			write(2, "Error\n", 6);
 			return (1);
 		}
 		tab_a[i - 1] = ft_atoi(argv[i]);
diff --git a/main.o b/main.o
index 01eaf0a..85beeef 100644
Binary files a/main.o and b/main.o differ
diff --git a/push_swap b/push_swap
index eb58c0c..79aea22 100755
Binary files a/push_swap and b/push_swap differ
diff --git a/push_swap_tester b/push_swap_tester
new file mode 160000
index 0000000..5962845
--- /dev/null
+++ b/push_swap_tester
@@ -0,0 +1 @@
+Subproject commit 59628457df966b6a6a12e63cecaa29456d2ed250
diff --git a/pushswap.h b/pushswap.h
index 24c8326..e4c35bd 100644
--- a/pushswap.h
+++ b/pushswap.h
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angouleme.fr  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2022/11/08 18:19:44 by cchauvet          #+#    #+#             */
-/*   Updated: 2022/11/29 16:22:26 by cchauvet         ###   ########.fr       */
+/*   Updated: 2022/11/30 13:30:55 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -19,6 +19,7 @@
 int		ft_isnum(char *str);
 int		ft_atoi(char *str);
 void	ft_putstr(char *str);
+char	**ft_split(const char *s, char c);
 
 void	ft_sort(int *tab, int size);
 int		ft_get_max_index(int *tab, int len);