3. 4. 5. 7. (10 points) Consider a sorting program in C++. 1. void my_sorting (int arr[], int n) 2. { int i, j, k, temp; i = 0; while (i < n-1) 6. { 7. k = i; 8. j = i+1; 9. 10. { 11. 12. 3 13. 14. while (j < n) if (arr[j] < arr[k]) } k = j; 15. j = j+1; 16. } 17. temp = arr[k]; 18. arr[k] = arr[i]; 19. arr[i] = temp; 20. i =i+1; 21. } 22. } (a) Present the basic operation of the program. In your answer, you should also present the line number of the basic operation clearly. (b) Present the time complexity of the algorithm in the O notation.