My solutions to the 2020 and 2021 advent of code.

My own rules :

• C : Only standard libraries (for example, no external sort).
• bash: Pure bash only: No external commands allowed (grep, sed, etc...).

Done 2020 (both C and bash, Cobol for day 1) :

• Day 1: Bash, C, and Cobol
• Days 2-18: Bash and C
• Days 19-22: Bash

Done 2021 (C only) :

• Days 1-25: C