Advent of Code 2023: Day Nine

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Part One Given this an input like this, find the next number in the sequence. See the advent of code instructions for more details, but we need to go from this: 0 3 6 9 12 15 To the following, to get the final value for that row of 18. To do this we take the first two numbers and get the difference between them. That becomes our first number on...