adventofcode/2021/day01/main.go

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2021-12-01 14:02:57 +00:00
package main
import (
"fmt"
h "git.bullercodeworks.com/brian/adventofcode/helpers"
)
func main() {
inp := h.StdinToIntSlice()
fmt.Println("# Part 1")
part1(inp)
fmt.Println("# Part 2")
part2(inp)
}
func part1(input []int) {
var inc int
for i := 1; i < len(input); i++ {
if input[i] > input[i-1] {
inc++
}
}
fmt.Printf("%d measurements increased\n", inc)
}
func part2(input []int) {
var inc int
for i := 1; i < len(input); i++ {
if i < len(input)-2 {
a := input[i-1] + input[i] + input[i+1]
b := input[i] + input[i+1] + input[i+2]
if b > a {
inc++
}
}
}
fmt.Printf("%d measurement windows increased\n", inc)
}