#includeIn this example, we use an unordered map to store each value of the array along with its index. We iterate through the array, computing the complement of each value with respect to the target value. If the complement is already on the map, we return the indices of the two values. Otherwise, we add the current value to the map. The example input used in this implementation is [2, 7, 11, 15], with a target value of 9. The output should be [0, 1], since the sum of values at indices 0 and 1 equals 9. The package library used in this implementation is the C++ Standard Template Library (STL), which includes the vector and unordered_map containers.#include #include std::vector twoSum(std::vector & nums, int target) { std::unordered_map map; for (int i = 0; i < nums.size(); i++) { int complement = target - nums[i]; if (map.find(complement) != map.end()) { return {map[complement], i}; } else { map[nums[i]] = i; } } return {}; } int main() { std::vector nums {2, 7, 11, 15}; int target = 9; std::vector result = twoSum(nums, target); std::cout << "[" << result[0] << ", " << result[1] << "]" << std::endl; return 0; }