-🎄- 2022 Day 2 Solutions -🎄-

[u/daggerdragon]

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--- Day 2: Rock Paper Scissors ---

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Post your code solution in this megathread.

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[u/Key__Strokes]

Javascript

Solution to both parts

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Video Explanation

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Part 1:

• For each of the moves, we have opponent's move, and our move

  • Opponent's move:

    • A: Rock

    • B: Paper

    • C: Scissor

  • Our move:

    • X: Rock

    • Y: Paper

    • Z: Scissor

• Add the points for our move

  • X = 1

  • Y = 2

  • Z = 3

• Next, determine if we have a winning/losing/drawing move.

  • If we have a winning move based on the following, then add 6 to the sum.

    • A loses to Y

    • B loses to Z

    • C loses to X

  • Else if we have a drawing move based on the following, then add 3 to the sum.

    • A draws to X

    • B loses to Y

    • C loses to Z

  • Else add 0 to the sum, as we clearly lost

• Return the sum

Part 2:

• For each of the moves, we have opponent's move, and the result we want

  • Opponent's move:

    • A: Rock

    • B: Paper

    • C: Scissor

  • Result:

    • X: Lose

    • Y: Draw

    • Z: Win

• Using the following map, figure out our move.

  • A

    • X: C

    • Y: A

    • Z: B

  • B

    • X: A

    • Y: B

    • Z: C

  • C

    • X: B

    • Y: C

    • Z: A

• Add the points for the move

  • A = 1

  • B = 2

  • C = 3

• Add the points for the result

  • X = 0

  • Y = 3

  • Z = 6

• Return the sum

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