Commit graph

11 commits

Author SHA1 Message Date
William Carroll
c34a3e2e97 Tread lightly into the Dynamic Programming section
After solving this, I was immediately stumped by the other DP questions, so I'm
taking a break.
2020-12-25 03:52:13 +00:00
William Carroll
4732a7456b Solve Binary "Sum of Two Integers"
This is tricky because Python has variable-width integers, so relying on two's
complement to support the sum of negative numbers results in infinite
recursion. I know three ways to combat this:
  1. Use Java.
  2. Conditionally branch and handle either addition or subtraction accordingly.
  3. Use a mask to enforce fixed-width integers in Python.
2020-12-25 03:50:18 +00:00
William Carroll
c389b46ecf Solve additional Tree problems
Only three more to go!
2020-12-22 18:22:40 +00:00
William Carroll
23b5dd754e Solve additional Matrix problems
Looks like "Rotate Image" is the only Matrix problem that remains. It was nice
to learn more about "Backtracking" -- a term I often encounter -- while
attempting to solve "Word Search".

From my current understanding, it is like Brute Force but with
short-circuiting. It also seems quite similar to Depth First Search, and I'm
currently unaware of how DFS and Backtracking differ. I'm hoping to learn more
though.
2020-12-22 03:03:11 +00:00
William Carroll
983b0fb276 Solve the Linked List questions
I did these during my flight from LON->NYC without wifi. I managed to get both
correct on the first attempt although I did not find the *optimal* solution for
"Reorder List". IMO "Reorder List" is the best Linked List question I've seen
because it covers a few essential Linked List tricks.
2020-12-18 19:55:18 +00:00
William Carroll
039e712656 Nest URLs beneath TODO entries
Tidying things up.
2020-12-18 14:41:26 +00:00
William Carroll
fd6029db69 Update remaining LC questions
Looks like I should prioritize the following topics:
- Dynamic Programming
- String
- Graph

Although I'm not sure how common DP questions are in interviews, DP is a useful
dragon to slay IMO.
2020-12-18 09:43:54 +00:00
William Carroll
9610ae5f5b Update Linked List LC questions
Snapshot my progress with Linked Lists...
2020-12-18 09:40:05 +00:00
William Carroll
88a22aba3d Update LC String questions
Looks like I have a few string questions to solve before closing that chapter.
2020-12-18 09:38:23 +00:00
William Carroll
262a0b45fb Mark LC Tree questions as done
Making sure that this document closely approximates the state of my LC
progress.
2020-12-18 09:36:28 +00:00
William Carroll
a30bc0f21d Create offline, org file from TeamBlind LC questions
TeamBlind.com hosts a curated list of DS&As questions from LeetCode.com that the
author claims appropriately samples the topics worth exploring. I'm creating an
offline list so that I can track my progress and work while I'm traveling.
2020-12-18 09:31:50 +00:00