Answers for the previous midterm.

1. A.   F T T F F
   B.   n, n^2, n, log n, 1

2. A.   AECIKPMG, GCAEMKIP, E
   B.   A, B, E
   C.   n

3.      2, 3, 5, X, 6

4.      B, A, C, A

5.  ___return arr[len];_______
    ___arr[len] = best_len;___