C:\Users\Andy\Documents>perl test.pl
    Length of string: 101000000
    Time taken was  0 wallclock secs ( 0.17 usr  0.03 sys +  0.00 cusr  0.00 csys =
     0.20 CPU) seconds

    Time taken was  1 wallclock secs ( 1.13 usr  0.03 sys +  0.00 cusr  0.00 csys =
     1.16 CPU) seconds
    C:\Users\Andy\Documents>