resistor-colors: add new exercise (#1466)

* resistor-colors: add new exercise

Co-Authored-By: ErikSchierboom <[email protected]>

Author: ErikSchierboom

exercises/resistor-colors/canonical-data.json

@@ -0,0 +1,38 @@
+{
+  "exercise": "resistor-colors",
+  "version": "1.0.0",
+  "cases": [
+    {
+      "description": "Brown and black",
+      "property": "value",
+      "input": {
+        "colors": ["brown", "black"]
+      },
+      "expected": 10
+    },
+    {
+      "description": "Blue and grey",
+      "property": "value",
+      "input": {
+        "colors": ["blue", "grey"]
+      },
+      "expected": 68
+    },
+    {
+      "description": "Yellow and violet",
+      "property": "value",
+      "input": {
+        "colors": ["yellow", "violet"]
+      },
+      "expected": 47
+    },
+    {
+      "description": "Orange and orange",
+      "property": "value",
+      "input": {
+        "colors": ["orange", "orange"]
+      },
+      "expected": 33
+    }
+  ]
+}

exercises/resistor-colors/description.md

@@ -0,0 +1,20 @@
+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 acts as a digit of a 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 two colors as input, and output the correct number.
+
+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

exercises/resistor-colors/metadata.yml

@@ -0,0 +1,4 @@
+---
+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"