Your mission, should you choose to accept it, is to create a grid of numbers in a spiral pattern. Your program should take two arguments:
- A starting number
- An integer that represents how wide / tall the grid should be
The numbers should start in the upper-left-hand corner, then go right, down, left, up, right etc...
If your program was called with the number 1 (start) and 4 (width), your code would produce:
1 2 3 4
12 13 14 5
11 16 15 6
10 9 8 7
If your program was called with the number 3 (start) and 5 (width), your code would produce:
3 4 5 6 7
18 19 20 21 8
17 26 27 22 9
16 25 24 23 10
15 14 13 12 11
If your program started at 10, and was 10 wide, it would be:
10 11 12 13 14 15 16 17 18 19
45 46 47 48 49 50 51 52 53 20
44 73 74 75 76 77 78 79 54 21
43 72 93 94 95 96 97 80 55 22
42 71 92 105 106 107 98 81 56 23
41 70 91 104 109 108 99 82 57 24
40 69 90 103 102 101 100 83 58 25
39 68 89 88 87 86 85 84 59 26
38 67 66 65 64 63 62 61 60 27
37 36 35 34 33 32 31 30 29 28
- Fork
- Clone
- Turn on TravisCI for the fork by visiting https://travis-ci.org/profile/, clicking the "Sync now" button and scrolling down to find the repository to build.
- Create a new branch for your work using
git checkout -b v1 - Implement specs and code
- Push using
git push -u origin v1
This warmup can be completed multiple times to increase your comfort level with the material. To work on this from scratch, you can:
- Add an upstream remote that points to the original repo
git remote add upstream git@github.com:gSchool/THIS-REPO.git - Fetch the latest from the upstream remote using
git fetch upstream - Create a new branch from the master branch of the upstream remote
git checkout -b v2 upstream/master - Implement specs and code
- Push using
git push -u origin v2
Each time you do the exercise, create a new branch. For example the 3rd time you do the exercise the branch name will be v3 instead of v2.