This program illustrates the use of the STL mismatch() algorithm
(extended version) to find mismatched values in two ranges of
integers from two vectors of integers, when the sum of digits
is used to determine if two integer values match.
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Here are the contents of v1:
21 13 5
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Here are the contents of v2:
21 22 111 31 24 30
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Now we compare the sequence in v1 with the sequence
starting at the third value in v2.
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The first pair of mismatched values are
5 from the first range, and
24 from the second range.
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Here are the contents of v3:
21 13 5 15 61 26 18 91
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Finally, we compare the sequence in v1 with the sequence in v3.
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The two sequences match fully.
The second iterator of the pair returned points at
15 in the second range (in v2).
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