Use equal_range to locate the first and last point at which 5 can be inserted in order : equal_range « STL Algorithms Binary search « C++ Tutorial

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C++ Tutorial » STL Algorithms Binary search » equal_range 
26.2.5.Use equal_range to locate the first and last point at which 5 can be inserted in order
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main()
{
   const int SIZE = 10;
   int a1[] 224446666};
   vector< int > va1, a1 + SIZE );

   pair< vector< int >::iterator, vector< int >::iterator > eq;

   cout << "\n\nUse equal_range to locate the first and last point at which 5 can be inserted in order";
   eq = equal_rangev.begin(), v.end());
   cout << "\n   Lower bound of 5 is element "
        << eq.first - v.begin() ) << " of vector v";
   cout << "\n   Upper bound of 5 is element "
        << eq.second - v.begin() ) << " of vector v" 
        << endl;            
   return 0;
}
26.2.equal_range
26.2.1.Use equal_range to determine both the lower- and upper-bound insertion points
26.2.2.equal_range and distance
26.2.3.Use equal function to check whether both collections are equal
26.2.4.Use equal function to check for corresponding even and odd elements
26.2.5.Use equal_range to locate the first and last point at which 5 can be inserted in order
26.2.6.equal_range( v.begin(), v.end(), 6 )
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