This program illustrates the use of the STL inplace_merge() algorithm
(extended version) to merge two ordered ranges of integer values in the
same vector into a single ordered range of values within that same vector.
The order of values is determined by one value preceding another if and
only if the first has a smaller digit sum than the second.
Press Enter to continue ...

Here are the contents of v:
11 41 36 59 98 21 13 6 52 44 28 69
Note that the first five values form the first range,
and the rest of the values form the second range.
Press Enter to continue ...

Now we perform the "in place merge".
Here are the revised contents of v:
11 21 13 41 6 52 44 36 28 59 69 98
Press Enter to continue ...