programming-challenges Advent of Code Year Languages used 2021 cpp NEPS Exercise Language 324 cpp URI Exercise Language 1068 java 1074 cpp 1120 cpp 1124 cpp 1228 python 1253 cpp 1519 python 1522 cpp, java 1550 1789 java 1910 java 2018 java 2065 java 2450 cpp 2471 java 2593 java 2674 cpp 3059 cpp 3184 python Code Wars Exercise Language kyu int32-to-ipv4 java 5 is-a-number-prime cpp 6 matrix-addition java 6 exes-and-ohs cpp 7 testing-1-2-3 cpp 7 remove-first-and-last-character cpp 8 reversed-strings cpp 8 Code Signal Exercise Language Arcade universe 1 cpp 2 cpp 3 cpp 4 cpp 5 cpp 6 cpp 7 cpp 8 cpp 9 cpp 10 cpp 11 cpp 12 py 13 cpp 14 cpp 15 cpp 16 cpp 17 cpp 18 cpp 19 cpp 20 cpp 21 cpp 22 cpp 23 cpp 24 cpp Project Euler Online Judge