Ruby Plus @ruby_plus

The official http://t.co/eA0IyFefra Twitter account. Joined November 2013

Tweets

193K
Followers

412
Following

69
Likes

1

Ruby Plus @ruby_plus

4 years ago

damage and cancer is very bad for the brand. This is like the cheap motels! Front desk has no clue how to deal with the situation. Horrible customer service!

0 0 0 0 0

Ruby Plus @ruby_plus

4 years ago

DP tip: Take the recursive code and modify it such that recursive calls are replaced by dp table lookups.

0 0 0 0 0

Ruby Plus @ruby_plus

4 years ago

To decide on the dp table dimensions, ask yourself: What are the changing parameters to the method? These parameters need to be the keys in the lookup table.

0 0 0 0 0

Ruby Plus @ruby_plus

4 years ago

The DFS traversal of a graph creates a tree during execution. Good way to visualize the execution and reason about the code.

0 0 0 0 0

Recursion by nature goes deep, DFS now makes more sense. The reason depth first traversal is named depth first search is we are searching for a solution. It's not about searching for an element. Few months ago was confused by the term DFS.

0 0 0 0 0

Ruby Plus @ruby_plus

4 years ago

One of key design decisions to solve tree problems is to know whether the problem requires top down or bottom up approach. Does the data flow from the child to parents or does it need to flow from parent to child? Counting the number of Univalue trees is an example for bottom up.

0 0 0 0 0

Ruby Plus @ruby_plus

4 years ago

Simulating recursion programmatically uses stack that is allocated in the heap. This has much more space available than the stack used by recursion. Stack used by recursion is much smaller than programatic stack.

0 0 0 0 0

Ruby Plus @ruby_plus

4 years ago

Dutch National Flag problem can be solved using two pointers, it needs two scans through the array whereas three pointers can partition the array in one scan. Positioning of pointers can be either scanning from left to right or pointers that start from the extremes of the array.

0 0 0 0 0

Ruby Plus @ruby_plus

5 years ago

0 0 0 0 0

Download Image

Ruby Plus @ruby_plus

5 years ago

Check out the book cover for my upcoming book. What do you think? #99designed 99d.me/c/mtnu

0 0 0 0 0

Ruby Plus @ruby_plus

5 years ago

0 0 0 0 0

Download Image

Ruby Plus @ruby_plus

5 years ago

How to Solve Coding Problems - A Developer's Guide to Acquiring Problem Solving Skills

0 0 0 0 0

Download Image

Ruby Plus @ruby_plus

5 years ago

Today is the 198th day of practicing coding problems on a daily basis. I am beginning to see the relationships between problems and instead of staring at the problem without any clue, beginning to see how to quickly come up with an approach to solve the problem.