52 lines
800 B
Go
52 lines
800 B
Go
package main
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import (
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"aoc2024/helper"
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"fmt"
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"sort"
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)
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type list struct {
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a []int
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b []int
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}
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func main() {
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list_a, list_b := helper.ReadLinesTwoIntSlices()
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list := list{a: list_a, b: list_b}
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// part 1
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distance := list.distance()
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fmt.Printf("Distance: %v\n", distance)
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// part 2
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similarity := list.similarity()
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fmt.Printf("Similarity: %v\n", similarity)
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}
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func (l list) distance() (dist int) {
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sort.Ints(l.a)
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sort.Ints(l.b)
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for i := range l.a {
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dist += helper.Abs(l.a[i] - l.b[i])
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}
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return dist
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}
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func (l list) similarity() (sim int) {
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for _, val := range l.a {
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valcount := countIntInSlice(l.b, val)
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sim += valcount * val
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}
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return sim
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}
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func countIntInSlice(lst []int, i int) (count int) {
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for _, val := range lst {
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if val == i {
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count++
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}
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}
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return count
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}
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