Commit graph

9 commits

Author SHA1 Message Date
William Carroll
c010e6d6cf Practice dijkstra's algorithm
Getting some practice with Python's heapq module (which I'm unsure if I used
correctly) to do a priority-first-traversal of a graph: known as Dijkstra's
algorithm.
2020-01-22 11:07:07 +00:00
William Carroll
91811236a5 Complete which-appears-twice
Solves the InterviewCake.com problem that asks us to write a function that
returns the number, y, that occurs twice in a list, xs, where xs is an unsorted
list of integers from 1..n with a length of n + 1.
2020-01-22 11:06:10 +00:00
William Carroll
4f6191b34c Complete reverse-linked-list problem
Completing the deceptively tricky reverse-linked-list problem from
InterviewCake.com.
2020-01-22 11:05:43 +00:00
William Carroll
2a0540d76d Create org table of sorting algorithms and their efficiency
This is just a small org table that I created to help me

Fun fact: In Emacs, you can insert literal TAB character by pressing `C-q
TAB`. For creating tables, using TAB characters feels perfectly
acceptable. Perhaps the TAB name comes from TABle.
2020-01-22 10:12:27 +00:00
William Carroll
de039c7133 Complete find-rotation-point
Solves an InterviewCake.com problem that returns the index of the element in a
list that should be the first element in that list. It's an exercise that's
useful for seeing other applications of a binary search.
2020-01-22 10:11:23 +00:00
William Carroll
bbea699f06 Complete string permutations problem
Solves an InterviewCake.com problem that returns all of the permutations of a
string input. The problem states that it's acceptable to assume that your input
string will not have repeated characters, which is why using a Set is
acceptable. I like this solution because it builds a permutations tree and then
assembles all of the permutations by doing a DFT over that tree.
2020-01-22 10:09:46 +00:00
William Carroll
64bd3f0303 Complete balanced binary tree problem
Supporting a function that returns true if a tree has no two leaf nodes with
depth differences greater than 1.
2020-01-22 10:08:56 +00:00
William Carroll
34dc3e05c8 Complete practice algorithms from InterviewCake.com
While I've done these algorithms before, I'm preparing for an on-site with
DeepMind, so I created a subdirectory called deepmind where I'm storing my
second attempts at these problems. The idea of storing them in a second
directory is to remove the urge to check my existing solutions that also exist
in this repository.
2020-01-18 17:04:05 +00:00
William Carroll
a62553f7b7 Add DeepMind subdirectory
I need to prepare for my on-site with DeepMind, so I'll host some attempts to
solve data structures and algorithms questions here.
2020-01-17 20:08:24 +00:00