Advent of Code 2021 - Day 1
inputFile = FileAttachment("input.txt").text()
depths = inputFile.split('\n').map(Number)
Puzzle 1
{
let increaseCount = 0
depths.forEach((depth, i) => {
let previous_index = i - 1
let previous_depth = depths[previous_index]
let current_depth = depth
if (current_depth > previous_depth) increaseCount += 1
})
return increaseCount
}
Puzzle 2
{
let increaseRollingSumCount = 0
let previousSum = null
depths.forEach((depth, i) => {
if (i >= 2) {
let previousPreviousDepth = depths[i - 2]
let previousDepth = depths[i - 1]
let currentDepth = depth
let currentSum = depth + previousDepth + previousPreviousDepth
if (currentSum > previousSum & previousSum !== null) {
increaseRollingSumCount += 1
}
previousSum = currentSum
}
})
return increaseRollingSumCount
}
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