55 lines
1.0 KiB
Go
55 lines
1.0 KiB
Go
package day01
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import (
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"adventofcode2024/utils"
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"sort"
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"strings"
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)
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func Part1(input string) int {
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var list1, list2 []int
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num := 0
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lines := strings.Split(input, "\n")
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for _, line := range lines {
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fields := strings.Fields(line)
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// Convert the fields to integers
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val1 := utils.MustAtoi(fields[0])
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val2 := utils.MustAtoi(fields[1])
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// Append to the respective slices
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list1 = append(list1, val1)
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list2 = append(list2, val2)
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}
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sort.Ints(list1)
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sort.Ints(list2)
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for i := 0; i < len(list1); i++ {
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num += utils.Abs(list1[i] - list2[i])
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}
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return num
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}
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func Part2(input string) int {
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var list1 []int
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list2 := make(map[int]int)
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num := 1
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lines := strings.Split(input, "\n")
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for _, line := range lines {
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fields := strings.Fields(line)
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// Convert the fields to integers
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val1 := utils.MustAtoi(fields[0])
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val2 := utils.MustAtoi(fields[1])
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// Append to the respective slices
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list1 = append(list1, val1)
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list2[val2]++
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}
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for i := 0; i < len(list1); i++ {
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num += list1[i] * list2[list1[i]]
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}
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return num
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}
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