How do I binary search with algorithms with std::deque?

Binary search is a highly efficient way to find an item from a sorted collection of items. In C++, although the standard library provides the std::vector and std::array containers, std::deque can also be used with binary search with a proper approach. Binary search works by repeatedly dividing the range of possible values in half until the target value is found or the range is exhausted.

Here is an example of how to perform a binary search using std::deque:

#include <iostream> #include <deque> #include <algorithm> int main() { std::deque myDeque = {1, 3, 5, 7, 9, 11, 13, 15}; int target = 7; auto it = std::lower_bound(myDeque.begin(), myDeque.end(), target); if (it != myDeque.end() && *it == target) { std::cout << "Element found: " << *it << std::endl; } else { std::cout << "Element not found" << std::endl; } return 0; }

C++ binary search std::deque C++ algorithms lower_bound efficient searching

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