today:
> did lc/cc questions.(n-queens);week7 assg;
was kept getting CTE coz of .pop(){cpp}(returning void-_-).
> got some glimpse about b-trees and b+ trees in class.
> started chapter 4; alex xu.
> read about CAP theorem.
> taught a friend DE for MSTs.
dng;
today:
1. few lc ques.
2. got stuck on backtracking again.
3. read some pages.
4. spent the evening outside, running around town. some places echo with old ghosts.
dng;
today:
1. Heaps: impl. min,max heap ; heap sort ; priority queue.
2. some lc ques(mostly heaps n pq).
3. read the first few chapters earlier, stopped, and now picking up the book again ; 
4. half-way through week6 assg. ; saw generic heap sort.