Demo Printing strings one,two,three,four,five Reversing strings five,four,three,two,one Matching strings with 'o' one,two,four Grepping strings for 'one|two|four' one,two,four Filtering strings without 'o' one,two,four Taking 3 strings one,two,three Head 3 strings one,two,three First 3 strings one,two,three Last 3 strings three,four,five Tail 3 strings three,four,five Skipping 2 strings three,four,five Dropping 2 strings three,four,five Transforming strings to lengths 3,3,5,4,4 Converting strings to lengths 3,3,5,4,4 Joining strings with '.' one.two.three.four.five Splitting strings with '.' one,two,three,four,five 1,2,3,4,5, 1,2,3,4,5, 1,2,3,4,5, 1,2,3,4,5 5,4,3,2,1 1,2,3,4,5 1,2,3,4,5 1,2,3,4,5 1,2,3,4,5 13.15.66.42.23 13.15.66.42.23 13.23 13.15.66.42.23.123 10,11,12,13,14,15 10,11,12,13,14,15 10,11,12,13,14,15, 15,14,13,12,11,10, 14,12,10, 1,2,3,4,5 1,3,5 2,4 5,4,3,2,1 1,2,3,4,5 2,4 2,4 4,2 4,2 14,12,10 15,14,13,12,11,10 10,11,12,13,14,15 10,12,14 14,12,10 10,12,14 14,12,10 100,98,96,94,92 100,98,96,94,92 100,98,96,94,92 97,98,99,100,101 97,98,99,100,101 97,98,99,100,101 1,2,3,4,5,6 4,5,6 one,two,three,four,five five,four,three,one