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replace_copy
template<class InIt, class OutIt, class T>
OutIt replace_copy(InIt first, InIt last, OutIt x,
const T& vold, const T& vnew);
The template function executes the statement:
if (*(first + N) == vold)
*(x + N) = vnew;
else
*(x + N) = *(first + N)
once for each N in the range [0, last - first).
If x and first designate regions of storage, the range [x, x + (last - first)) must not overlap the range [first, last).
See the related sample program.