103 lines
2.1 KiB
Go
103 lines
2.1 KiB
Go
package day16
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import (
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"strconv"
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"strings"
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"tools"
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)
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var knownSpecs = map[string]int{
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"children": 3,
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"cats": 7,
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"samoyeds": 2,
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"pomeranians": 3,
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"akitas": 0,
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"vizslas": 0,
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"goldfish": 5,
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"trees": 3,
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"cars": 2,
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"perfumes": 1,
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}
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func getSueSpecSlice(input []string) []map[string]int {
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var sueSpecs []map[string]int
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var specName string
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var specValue int
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for _, line := range input {
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lineParts := strings.Split(line, ", ")
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thisSpecs := make(map[string]int)
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for _, linePart := range lineParts {
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spec := strings.Split(linePart, ": ")
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if len(spec) == 3 { // Sue xxx: bla: 1
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specName = spec[1]
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specValue, _ = strconv.Atoi(spec[2])
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} else {
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specName = spec[0]
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specValue, _ = strconv.Atoi(spec[1])
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}
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thisSpecs[specName] = specValue
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}
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sueSpecs = append(sueSpecs, thisSpecs)
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}
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return sueSpecs
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}
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func Part1(puzzle tools.AoCPuzzle) interface{} {
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sueSpecs := getSueSpecSlice(puzzle.GetInputArray())
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var answer int
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for sueNumber, specs := range sueSpecs {
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match := true
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for k, v := range specs {
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if knownSpecs[k] != v {
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match = false
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break
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}
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}
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if match {
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// remember: sueSpecs' index starts with 0 - the Sue-Count starts with 1
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answer = sueNumber + 1
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break
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}
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}
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return answer
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}
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func Part2(puzzle tools.AoCPuzzle) interface{} {
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sueSpecs := getSueSpecSlice(puzzle.GetInputArray())
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dontCheckExact := make(tools.Set)
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dontCheckExact.Add("cats")
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dontCheckExact.Add("trees")
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dontCheckExact.Add("pomeranians")
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dontCheckExact.Add("goldfish")
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var answer int
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for sueNumber, specs := range sueSpecs {
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match := true
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for k, v := range specs {
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if (k == "cats" || k == "trees") && v <= knownSpecs[k] {
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match = false
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break
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}
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if (k == "pomeranians" || k == "goldfish") && v >= knownSpecs[k] {
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match = false
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break
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}
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if !dontCheckExact.Contains(k) && v != knownSpecs[k] {
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match = false
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break
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}
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}
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if match {
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// remember: sueSpecs' index starts with 0 - the Sue-Count starts with 1
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answer = sueNumber + 1
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break
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}
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}
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return answer
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}
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