This program illustrates the use of the STL rotate_copy() algorithm to
rotate the order of all, or just some, of the values in a vector of integers
while copying the values to an output range in another vector of integers.
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Here are the values in the vector v1:
1 2 3 4 5
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Here are the values in the vector v2:
1 2 3 4 5 6 7 8 9 10
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Now we copy all values from v1 to v2, starting at the beginning of v2,
and simultaneously rotating the order of the copied values so that the
fourth value bcomes the first value.
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Here are the revised values in v2:
4 5 1 2 3 6 7 8 9 10
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The iterator returned by the algorithm is pointing at the value 6.
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Now we copy the midddle 3 of the values in v1 from v1 to v2, starting at the
7th value of v2, and simultaneously rotate the order of the copied values so
that the 3rd of the copied values becomes the first of the copied group.
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Here are the revised values in v2:
4 5 1 2 3 6 4 2 3 10
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The iterator returned by the algorithm is pointing at the value 10.
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