Exercise 2.1.1
Exercise 2.1.2
Exercise 2.1.3
Exercise 2.1.3
Exercise 2.1.4
Exercise 2.1.4
Added some notes.
Addd some notes on algorithms analytics.
Exercise 2.2.1
Exercise 2.2.2
Exercise 2.2.3
Exercise 2.2.4
Some notes on Divide and Conquer.
Exercise 2.3.1
Exercise 2.3.2
Exercise 2.3.2
Exercise 2.3.3
Exercise 2.3.3
Exercise 2.3.3
Exercise 2.3.4