commandline session
$ 4.2.20 2 502---> cat worked Bubble sort Selection sort Insertion sort Shell sort Comb sort Merge sort Heapsort Quicksort Counting sort Bucket sort Radix sort Distribution sort Timsort $ 4.2.20 3 503---> grep -h '^[A-Z]' worked Bubble sort Selection sort Insertion sort Shell sort Comb sort Merge sort Heapsort Quicksort Counting sort $ 4.2.20 4 504---> grep -h '^[-AZ]' worked $ 4.2.20 5 505---> grep -h '^[-IZ]' worked Insertion sort $ 4.2.20 6 506--->