If you want to build something using a Raspberry Pi, you'll probably use resistors. For this exercise, you need to know two things about them:
- Each resistor has a resistance value.
- Resistors are small - so small in fact that if you printed the resistance value on them, it would be hard to read.
To get around this problem, manufacturers print color-coded bands onto the resistors to denote their resistance values. Each band has a position and a numeric value. For example, if they printed a brown band (value 1) followed by a green band (value 5), it would translate to the number 15.
In this exercise you are going to create a helpful program so that you don't have to remember the values of the bands. The program will take color names as input and output a two digit number, even if the input is more than two colors!
The colors are mapped to the numbers from 0 to 9 in the sequence: Black - Brown - Red - Orange - Yellow - Green - Blue - Violet - Grey - White
From the example above: brown-green should return 15 brown-green-violet should return 15 too, ignoring the third color.
Go through the setup instructions for Javascript to install the necessary dependencies:
https://exercism.io/tracks/javascript/installation
Install assignment dependencies:
$ npm installExecute the tests with:
$ npm testIn the test suites all tests but the first have been skipped.
Once you get a test passing, you can enable the next one by
changing xtest to test.
Maud de Vries, Erik Schierboom exercism/problem-specifications#1464
It's possible to submit an incomplete solution so you can see how others have completed the exercise.