diff --git a/ex01/Makefile b/ex01/Makefile
new file mode 100644
index 0000000..ffb0111
--- /dev/null
+++ b/ex01/Makefile
@@ -0,0 +1,58 @@
+# **************************************************************************** #
+#                                                                              #
+#                                                         :::      ::::::::    #
+#    Makefile                                           :+:      :+:    :+:    #
+#                                                     +:+ +:+         +:+      #
+#    By: mmoussou <mmoussou@student.42angouleme.fr  +#+  +:+       +#+         #
+#                                                 +#+#+#+#+#+   +#+            #
+#    Created: 2024/01/22 07:21:18 by mmoussou          #+#    #+#              #
+#    Updated: 2025/08/26 17:21:38 by mmoussou         ###   ########.fr        #
+#                                                                              #
+# **************************************************************************** #
+
+SHELL = bash
+
+RED = \033[0;31m
+GREEN = \033[0;32m
+YELLOW = \033[1;33m
+PURPLE = \e[0;35m
+NC = \033[0m
+DELETE = \x1B[2K
+
+CC = c++
+
+FLAGS = -std=c++98 -Wall -Werror -Wextra
+
+INCLUDES = .
+
+NAME = ex01
+
+SRCS = main.cpp Span.cpp
+
+OBJSDIR = obj/
+OBJS = $(addprefix $(OBJSDIR), $(SRCS:.cpp=.o))
+
+all: $(NAME)
+
+$(NAME): $(OBJS)
+	@$(CC) $(FLAGS) -I$(INCLUDES) $(OBJS) -o $(NAME)
+	@printf "$(NC)$(YELLOW)「✨」 feat($(NAME)): program compiled\n$(NC)"
+
+$(OBJSDIR)%.o: %.cpp
+	@mkdir -p $(@D)
+	@$(CC) $(FLAGS) -I$(INCLUDES) -c $< -o $@
+	@printf "$(NC)$(GREEN)「🔨」 build($<): object compiled\n$(NC)"
+
+clean:
+	@rm -f $(OBJS)
+	@printf "$(NC)$(RED)「🗑️」 clean($(OBJS)): object deleted\n$(NC)"
+
+fclean: clean
+	@rm -f $(NAME)
+	@rm -Rf $(OBJSDIR)
+	@printf "$(NC)$(RED)「🗑️」 fclean($(NAME)): program deleted\n$(NC)"
+
+re: fclean
+	@$(MAKE) -s all
+
+.PHONY: clean fclean all re
diff --git a/ex01/Span.cpp b/ex01/Span.cpp
new file mode 100644
index 0000000..c7ba08d
--- /dev/null
+++ b/ex01/Span.cpp
@@ -0,0 +1,74 @@
+#include <stdexcept>
+#include <algorithm>
+#include <limits>
+
+#include <iostream>
+
+#include "Span.hpp"
+
+Span::Span(void)
+: _size(0), _max_size(0)
+{
+}
+
+Span::Span(unsigned int size)
+: _size(0), _max_size(size)
+{
+}
+
+Span::Span(Span &other)
+: _size(other._size), _max_size(other._max_size)
+{
+	this->_data = other._data;
+}
+
+Span	&Span::operator=(Span &other)
+{
+	this->_max_size = other._max_size;
+	this->_size = other._size;
+	this->_data = other._data;
+
+	return *this;
+}
+
+Span::~Span(void)
+{
+}
+
+void	Span::addNumber(int value)
+{
+	if (_size == _max_size)
+		throw std::runtime_error("max span size reached");
+	_size++;
+	_data.push_back(value);
+
+}
+
+int	Span::shortestSpan(void)
+{
+	if (_size < 2)
+		throw std::runtime_error("not enough values in the span");
+
+	std::vector<int> sorted = _data;
+	size_t shortest = std::numeric_limits<size_t>::max();
+
+	std::sort(sorted.begin(), sorted.end());
+
+	for (unsigned int i = 0; i < _size - 1; i++)
+	{
+		if ((unsigned int)(sorted[i + 1] - sorted[i]) < shortest)
+			shortest = sorted[i + 1] - sorted[i];
+	}
+	return shortest;
+}
+
+int	Span::longestSpan(void)
+{
+	if (_size < 2)
+		throw std::runtime_error("not enough values in the span");
+
+	std::vector<int>::iterator min = std::min_element(_data.begin(), _data.end());
+	std::vector<int>::iterator max = std::max_element(_data.begin(), _data.end());
+
+	return (*max - *min);
+}
diff --git a/ex01/Span.hpp b/ex01/Span.hpp
new file mode 100644
index 0000000..73eaf25
--- /dev/null
+++ b/ex01/Span.hpp
@@ -0,0 +1,20 @@
+#include <vector>
+
+class Span {
+public:
+	Span(void);
+	Span(unsigned int);
+	Span(Span &);
+	Span	&operator=(Span &);
+	~Span(void);
+
+	void	addNumber(int);
+
+	int	shortestSpan(void);
+	int	longestSpan(void);
+
+private:
+	std::vector<int>	_data;
+	std::size_t			_size;
+	std::size_t			_max_size;
+};
diff --git a/ex01/main.cpp b/ex01/main.cpp
new file mode 100644
index 0000000..e48f492
--- /dev/null
+++ b/ex01/main.cpp
@@ -0,0 +1,15 @@
+#include "Span.hpp"
+#include <iostream>
+
+int main()
+{
+	Span sp(5);
+	sp.addNumber(6);
+	sp.addNumber(3);
+	sp.addNumber(17);
+	sp.addNumber(9);
+	sp.addNumber(11);
+	std::cout << sp.shortestSpan() << std::endl;
+	std::cout << sp.longestSpan() << std::endl;
+	return 0;
+}