P1.

Self-evaluation of rust: 1.

I did once an introductory course to Rust, but I am eager to learn. Given my background in C++, the transition should not be difficult.

P2

Download the dictionary,curate it and extract the words:

wget https://www.gutenberg.org/files/98/98-0.txt

# Read all text, do some input cleanup and extract all words (lower-case)
cat 98-0.txt | sed -e "s/‘/'/g" -e "s/’/'/g" -e 's/“/"/g' -e 's/”/"/g' | tr -s '[:space:][:punct:][:digit:]"' '\n'| tr '[:upper:]' '[:lower:]' |  sort | uniq > words.txt

Total number of words: 19878 Max length of a word is 17 (for word "undistinguishable").

Code: p2.cpp

P3

The problem asks us to implement a JSON parse for a specific endpoint. A generic JSON parser can be quite complex, but because this specific endpoints returns a certain schema, we can optimize for it.

Documentation for ticker at: https://developers.binance.com/docs/derivatives/option/market-data/24hr-Ticker-Price-Change-Statistics

Download ticker data:

$ wget -O ticker.json https://eapi.binance.com/eapi/v1/ticker

We can measure the parsing speed of the program using a utility like time. For the ticker.json input, we get on my machine

real	0m0.088s
user	0m0.080s
sys	    0m0.000s

For more accurate measurements, we should use some better tooling. Process isolation and multiple iterations of the same test would give more meaningful numbers.

Code: p3.cpp