We are playing the Guess Game. The game is as follows:
I pick a number from 1 to n. You have to guess which number I picked.
Every time you guess wrong, I’ll tell you whether the number is higher or lower.
You call a pre-defined API
guess(int num) which returns 3 possible results
(-1, 1, or 0):
-1 : My number is lower
n = 10, I pick 6.
// Forward declaration of guess API.
(E) First Bad Version
(M) Guess Number Higher or Lower II