day_04.md

🎄 Day 4: What do you call a serialized reindeer? Serdeer

Under the soft glow of the Northern Lights, Santa's reindeer are training for the big night. But, oh deer! The reindeer's stats have been serialized into an unknown format after a playful elf accidentally spilled hot cocoa on the central computer. The data needs to be deserialized so the reindeer team can be assembled based on their combined strength.

⭐ Task 1: Reindeer cheer

The task is to create a POST endpoint /4/strength that calculates the combined strength of a group of reindeer, so that Santa knows if they can pull his sled through the skies.

The input to the endpoint is a JSON array containing information about each reindeer. Each reindeer is represented as an object with two attributes: "name" (string) and "strength" (integer). Collect the strength of each reindeer and respond with the sum.

🔔 Tips

• serde
• serde_json
• JSON in Axum
• JSON in Actix Web
• JSON in Rocket

💠 Example

curl -X POST http://localhost:8000/4/strength \
  -H 'Content-Type: application/json' \
  -d '[
    { "name": "Dasher", "strength": 5 },
    { "name": "Dancer", "strength": 6 },
    { "name": "Prancer", "strength": 4 },
    { "name": "Vixen", "strength": 7 }
  ]'

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🎁 Task 2: Cursed candy eating contest (150 bonus points)

This time, there is some more data for each reindeer (see example). The endpoint is called /4/contest, because the reindeer are now going to compare the attributes of the reindeer and present a summary of the winners.

There is at least one reindeer participating in the contest, and there is never a tie for first place.

For some reason, one of the field names in the input seems to still be a bit corrupted from the incident. Guess we just have to deal with it anyways.

The output should be a JSON object containing a summary of the winners (see example).

💠 Example Input

curl -X POST http://localhost:8000/4/contest \
  -H 'Content-Type: application/json' \
  -d '[
    {
      "name": "Dasher",
      "strength": 5,
      "speed": 50.4,
      "height": 80,
      "antler_width": 36,
      "snow_magic_power": 9001,
      "favorite_food": "hay",
      "cAnD13s_3ATeN-yesT3rdAy": 2
    },
    {
      "name": "Dancer",
      "strength": 6,
      "speed": 48.2,
      "height": 65,
      "antler_width": 37,
      "snow_magic_power": 4004,
      "favorite_food": "grass",
      "cAnD13s_3ATeN-yesT3rdAy": 5
    }
  ]'

💠 Example Output

Note: JSON output examples are sometimes formatted. Output from your endpoint does not need to be formatted. The output is parsed and checked as a value.

{
  "fastest": "Speeding past the finish line with a strength of 5 is Dasher",
  "tallest": "Dasher is standing tall with his 36 cm wide antlers",
  "magician": "Dasher could blast you away with a snow magic power of 9001",
  "consumer": "Dancer ate lots of candies, but also some grass"
}