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Add resistor-color-duo exercise
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@BNAndras
BNAndras committed Apr 21, 2024
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152 changes: 118 additions & 34 deletions config.json
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33 changes: 33 additions & 0 deletions exercises/practice/resistor-color-duo/.docs/instructions.md
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# Instructions

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.

The first 2 bands of a resistor have a simple encoding scheme: each color maps to a single number.
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 band colors are encoded as follows:

- Black: 0
- Brown: 1
- Red: 2
- Orange: 3
- Yellow: 4
- Green: 5
- Blue: 6
- Violet: 7
- Grey: 8
- White: 9

From the example above:
brown-green should return 15
brown-green-violet should return 15 too, ignoring the third color.
19 changes: 19 additions & 0 deletions exercises/practice/resistor-color-duo/.meta/config.json
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{
"authors": [
"BNAndras"
],
"files": {
"solution": [
"resistor-color-duo.el"
],
"test": [
"resistor-color-duo-test.el"
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},
"blurb": "Convert color codes, as used on resistors, to a numeric value.",
"source": "Maud de Vries, Erik Schierboom",
"source_url": "https://github.com/exercism/problem-specifications/issues/1464"
}
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