#10 test what I put is what I get for big number of elements
Merge branch 'master' of https://github.com/gmamaladze/FreeUni-SDP-2014-Lab-Testing
#10 test total number of values for empty map
Merge branch 'master' of https://github.com/gmamaladze/FreeUni-SDP-2014-Lab-Testing
#10 test total number of values for not empty map
#10 refactor code to count total number of values in constant time
Merge branch 'master' of https://github.com/gmamaladze/FreeUni-SDP-2014-Lab-Testing