first commit of problem 17

problem link = http://projecteuler.net/problem=17

this programme can be used to translate numbers from digital numbers to
English with a slight change, so it is complicated compared with the
programme only count the letters.
first commit of problem 18

problem link = http://projecteuler.net/problem=18
first commit of problem 19

http://projecteuler.net/problem=19
first commit of problem 20

http://projecteuler.net/problem=20
first commit of problem 21

http://projecteuler.net/problem=21
first commit of problem 22

http://projecteuler.net/problem=22