Sorting Vector Elements (P.508)

1. Modify your previous exercise. After reading the strings into a vector, invoke the sort() function as mentioned in the textbook (P.508) to sort the vector ascendingly. Note that strings are sorted by ASCII-code order, so the result should look like:

   
   Please input file name -- vector1.dat
   
   1:      14
   2:      15
   3:      17
   4:      18
   5:      20
   6:      23
   7:      24
   8:      32
   9:      40
   10:     41
   11:     45
   12:     54
   13:     55
   14:     58
   15:     63
   16:     66
   17:     7
   18:     78
   19:     84
   20:     9