This program illustrates the use of the STL is_sorted_until() algorithm from
<algorithm> to find the first integer that destroys the sorting order of a
vector of integers into descending order.
Press Enter to continue ...
For 5 4 3 2 1, the sequence is sorted in descending order.
For 5 4 3 0 1, the sequence sort was destroyed at element 1.
Press Enter to continue ...