C++ CODE.....use chrono library

/** @post Sorts the elements in a range of a array. @param a the array with the elements to sort @param from the first position in the range to sort @param to the last position in the range to sort (included) */ void mergeSort(int a[], int from, int to);

/** @post Sorts values in ascending order using mergeSort and averages its runtime over 10 runs @param values the array to sort @param size of the array to sort @return the average runtime in microseconds */ double mergeSortTest(int values[], size_t size);