💻 algorithms × 23 💻 arrays × 21 🚩 web × 14 💻 array × 12 💻 sorting × 10 ⭐ traversal × 8 💻 iteration × 8 💪 linux × 7 🚩 php × 6 💪 navigation × 6 💪 directories × 5 💻 simulation × 5 💪 listing × 4 💻 greedy × 4 🚩 encryption × 3 💪 basics × 3 💪 file-management × 3 💪 file-commands × 3 💪 creation × 3 💻 filtering × 3 💻 strings × 3 💻 math × 3 💪 shell × 2 💪 file-creation × 2 💪 file-system × 2 💪 file-move × 2 💪 hidden-files × 2 💻 compression × 2 💻 grid × 2 💻 subarrays × 2 💻 combinatorics × 2 💻 alternating × 2 💻 dynamic-programming × 2 💻 list-manipulation × 2 💻 sequence × 2 💻 balance × 2 💻 substring × 2 💻 validation × 2 💻 search × 2 💻 sum × 2 💻 order × 2