Completed the core curriculum at 42Tokyo, an engineering school, learning algorithms, memory management, and UNIX systems programming centered on C.
Rebuilt the standard library (libft), a printf clone handling variadic arguments (ft_printf), and a line-by-line file reader (get_next_line) — all without using the standard library — to build a solid grounding in C, pointer manipulation, and memory management.
Implemented the dining philosophers problem with pthreads and mutexes (philosophers, handling deadlock avoidance and starvation detection), process piping via fork/exec (pipex), and a shell rebuilt from scratch (minishell — tokenizing, parsing, environment-variable expansion, pipes/redirection/heredocs, builtins like cd and export, and signal handling), gaining an implementation-level understanding of process control and concurrency.
In push_swap, designed a sorting algorithm working with only two stacks and a limited instruction set, optimizing for operation count and runtime. Built a 2D game (so_long) and a raycasting-based pseudo-3D engine (cub3d, using minilibx for map loading and wall texture mapping).
In an environment with no instructors or textbooks, I built the self-driven ability to read source code, verify behavior with a debugger, and refine my work through discussion with peers.