Return an iterator from std::lower_bound : lower_bound « STL Algorithms Binary search « C++

1. C++
2. STL Algorithms Binary search
3. lower_bound

Return an iterator from std::lower_bound

 
 

#include <iostream>
using std::cout;
using std::endl;

#include <algorithm>
#include <vector>
#include <iterator>

int main()
{
   int a1[ 10 ] = { 2, 2, 4, 4, 4, 6, 6, 6, 6, 8 };
   std::vector< int > v( a1, a1 + 10 );
   std::ostream_iterator< int > output( cout, " " );

   std::copy( v.begin(), v.end(), output );

   std::vector< int >::iterator lower;
   lower = std::lower_bound( v.begin(), v.end(), 6 );
   cout << ( lower - v.begin() );

   return 0;
}

 /* 
2 2 4 4 4 6 6 6 6 8 5
 */       
  

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