kostaskoyias / foo-bar

Solutions to google foo.bar challenge.

foo-bar

These are my solutions to the foo-bar challenge invitation I got from G o o g l e.

Repo structure

For all problems solved, standard Java 8 was used.
Each level consists of 1 to 3 challenges, each of whom has it's own package under src of the form foo.bar.l${level_number}.c${challenge_number}. Challenge number might be omitted in case it is the only one in that level.

After cloning/forking, please build the project with Gradle as follows

./gradlew build

Then, to test a particular problem, for example l2.c2, please type

./gradlew test --tests foo.bar.l2.c2.solution.SolutionTest

In each challenge, Google provides 2-3 out of the 5-10 total test cases as examples. The rest of them are hidden.
For each challenge lx.cy

• description can be found under src/main/foo/bar/lx/cy/readme.txt
• solution can be found under src/main/foo/bar/lx/cy/solution/Solution.java and
• test cases can be found under src/test/foo/bar/lx/cy/solution/SolutionTest.java

Challenge structure

Based on what I have read until know, this is how the whole challenge is structured.

Level	Challenge	Time limit for each challenge	Reward after completion
1	1	2 days	-
2	2	3 days	Friend referral link1
3	3	4 days	Google Interview2
4	2	15 days	Another friend referral link
5	1	22 days	-

1. A referral link allows the person you send it to, to enter foobar.
2. You are asked to fill out your personal info, if you wish, then a Google recruiter will contact you soon.

Challenges

• Level 1

  1. Braille Translation

• Level 2

  1. Ion Flux Relabeling
  2. Gearing Up for Destruction

• Level 3

  1. Prepare the Bunnies' Escape
  2. The Grandest Staircase Of Them All
  3. Find the Access Codes

• Level 4

  1. Escape Pods
  2. Running with Bunnies

• Level 5

  1. Expanding Nebula(not solved)

Note that the readme files were slightly simplified while solving the corresponding challenge.

End message

After completing all challenges, Google will give you a base64 encoded message. The key to decode it is your foobar username. A script was added that prints this message decoded.

More information

To learn more about Google's foobar challenge, check out some of the links below:

1. medium
2. freeCodeCamp
3. YouTube