upper_bound
It returns an iterator pointing to the first
element in the range [first, last) that is greater than value,
or last if no such element is found.
upper_bound( arr,arr+n,data);
upper_bound
It returns an iterator pointing to the first
element in the range [first, last) that is greater than value,
or last if no such element is found.
upper_bound( arr,arr+n,data);
lower bound upper bound cpp
// lower_bound/upper_bound example
#include <iostream> // std::cout
#include <algorithm> // std::lower_bound, std::upper_bound, std::sort
#include <vector> // std::vector
int main () {
int myints[] = {10,20,30,30,20,10,10,20};
std::vector<int> v(myints,myints+8); // 10 20 30 30 20 10 10 20
std::sort (v.begin(), v.end()); // 10 10 10 20 20 20 30 30
std::vector<int>::iterator low,up;
low=std::lower_bound (v.begin(), v.end(), 20); // ^
up= std::upper_bound (v.begin(), v.end(), 20); // ^
std::cout << "lower_bound at position " << (low- v.begin()) << 'n';
std::cout << "upper_bound at position " << (up - v.begin()) << 'n';
return 0;
}
lower bound c++
The lower_bound() method in C++ is used to return an iterator pointing to the first element in the range [first, last) which has a value not less than val.
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