set_union

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cppreference.com > C++ Algorithms > set_union

set_union

Syntax:

  #include <algorithm>
  iterator set_union( iterator start1, iterator end1, iterator start2, iterator end2, iterator result );
  iterator set_union( iterator start1, iterator end1, iterator start2, iterator end2, iterator result, StrictWeakOrdering cmp );

The set_union() algorithm computes the union of the two ranges [start1,end1) and [start2,end2) and stores it starting at result.

The return value of set_union() is an iterator to the end of the union range.

set_union() runs in linear time.