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package main
import (
"fmt"
"os"
"sort"
"strconv"
"strings"
)
func AbsInt(x int) int {
if x < 0 {
return -x
}
return x
}
func solve_part_one(data string) int {
var list_1 []int
var list_2 []int
ans := 0
for _, line := range strings.Split(data, "\n") {
if len(line) > 0 {
elements := strings.Split(line, " ")
ele1, _ := strconv.Atoi(elements[0])
ele2, _ := strconv.Atoi(elements[1])
list_1 = append(list_1, ele1)
list_2 = append(list_2, ele2)
}
}
sort.Ints(list_1)
sort.Ints(list_2)
for i := range len(list_1) {
ans += AbsInt(list_1[i] - list_2[i])
}
return ans
}
func solve_part_two(data string) int {
var list_1 []int
var list_2 []int
ans := 0
for _, line := range strings.Split(data, "\n") {
if len(line) > 0 {
elements := strings.Split(line, " ")
ele1, _ := strconv.Atoi(elements[0])
ele2, _ := strconv.Atoi(elements[1])
list_1 = append(list_1, ele1)
list_2 = append(list_2, ele2)
}
}
counts := make(map[int]int)
for _, num := range list_2 {
counts[num]++
}
for i := range len(list_1) {
ans += list_1[i] * counts[list_1[i]]
}
return ans
}
func main() {
test_1, _ := os.ReadFile("../input/day_1.test")
test_2, _ := os.ReadFile("../input/day_1_2.test")
prod, _ := os.ReadFile("../input/day_1.prod")
content_test_1 := string(test_1)
content_test_2 := string(test_2)
content_prod := string(prod)
fmt.Println("Part_1 test: ", solve_part_one(content_test_1))
fmt.Println("Part_1 prod: ", solve_part_one(content_prod))
fmt.Println("Part_2 test: ", solve_part_two(content_test_2))
fmt.Println("Part_2 prod: ", solve_part_two(content_prod))
}
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