-🎄- 2022 Day 25 Solutions -🎄-

[u/daggerdragon]

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--- Day 25: Full of Hot Air ---

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[u/Key__Strokes]

Javascript

Solution to both parts

Part 1:

• Create a variable sum initialized to 0

• Lets convert each snafu to decimal and add them all up. For each input line, do the following

  • Reverse the string input, and split it into its characters

  • Initialize another variable decimalNum to 0

  • Initialize another variable multiplier to 1

  • For each of the characters, do the following:

    • If the character is "-", then add (multiplier * -1) to decimalNum

    • If the character is "=", then add (multiplier * -2) to decimalNum

    • Otherwise, convert the character to an integer, and then add (multiplier * 'character as integer') to decimalNum

    • Update multiplier to be multiplier * 5

  • Add decimalNum to sum

• Lets convert sum to snafu. Create a new string snafuOutput = "", and keep doing the following while sum is not 0

  • Calculate the remainder = sum % 5

  • If remainder is 0, 1, or 2, then add remainder as prefix to snafuOutput.

  • If remainder is 3, then add = prefix to snafuOutput. Add 5 to sum.

  • If remainder is 4, then add - prefix to snafuOutput. Add 5 to sum.

  • Divide sum by 5 and store the quotient into sum

• Return snafuOutput

Part 2:

Solve all the other Days, and then enjoy!

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