freecodecamp--freecodecamp/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/6a26df95efa55a2524399745.md

id, title, challengeType, dashedName

id	title	challengeType	dashedName
6a26df95efa55a2524399745	Challenge 364: Between Two Buckets	28	challenge-364

--description--

Given two buckets of paint, each with an RGB color and a fullness level, return the mixed RGB color as an array of three integers.

• Each bucket is an object (JavaScript) or dictionary (Python) with a color property (an array of three integers [r, g, b]) and a fullness property (0–100).
• The mixed color is a weighted average of each channel in the two colors based on fullness level, with each channel rounded to the nearest integer.

--hints--

mixPaint({ color: [250, 250, 250], fullness: 50 }, { color: [0, 0, 0], fullness: 50 }) should return [125, 125, 125].

assert.deepEqual(mixPaint({ color: [250, 250, 250], fullness: 50 }, { color: [0, 0, 0], fullness: 50 }), [125, 125, 125]);

mixPaint({ color: [250, 250, 250], fullness: 80 }, { color: [0, 0, 0], fullness: 20 }) should return [200, 200, 200].

assert.deepEqual(mixPaint({ color: [250, 250, 250], fullness: 80 }, { color: [0, 0, 0], fullness: 20 }), [200, 200, 200]);

mixPaint({ color: [100, 150, 200], fullness: 30 }, { color: [100, 150, 200], fullness: 70 }) should return [100, 150, 200].

assert.deepEqual(mixPaint({ color: [100, 150, 200], fullness: 30 }, { color: [100, 150, 200], fullness: 70 }), [100, 150, 200]);

mixPaint({ color: [143, 143, 101], fullness: 45 }, { color: [100, 204, 204], fullness: 90 }) should return [114, 184, 170].

assert.deepEqual(mixPaint({ color: [143, 143, 101], fullness: 45 }, { color: [100, 204, 204], fullness: 90 }), [114, 184, 170]);

mixPaint({ color: [15, 134, 249], fullness: 29 }, { color: [97, 178, 55], fullness: 54 }) should return [68, 163, 123].

assert.deepEqual(mixPaint({ color: [15, 134, 249], fullness: 29 }, { color: [97, 178, 55], fullness: 54 }), [68, 163, 123]);

--seed--

--seed-contents--

function mixPaint(bucket1, bucket2) {

  return bucket1;
}

--solutions--

function mixPaint(bucket1, bucket2) {
  const total = bucket1.fullness + bucket2.fullness;
  return bucket1.color.map((channel, i) =>
    Math.round((channel * bucket1.fullness + bucket2.color[i] * bucket2.fullness) / total)
  );
}