119 lines
1.8 KiB
Go
119 lines
1.8 KiB
Go
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package main
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import (
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"bufio"
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"fmt"
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"log"
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"os"
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"strconv"
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"strings"
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)
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func main() {
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input := stdinToStringSlice()
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var verbose, pt2 bool
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var allDiscs []Disc
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if len(os.Args) > 1 {
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for i := range os.Args {
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switch os.Args[i] {
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case "-2": // Do part 2
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pt2 = true
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case "-v": // Verbose mode
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verbose = true
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}
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}
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}
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for i := range input {
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pts := strings.Fields(input[i])
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id := atoi(pts[1][1:])
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ttl := atoi(pts[3])
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curr := atoi(pts[11][0 : len(pts[11])-1])
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allDiscs = append(allDiscs, *CreateDisc(id, ttl, curr))
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}
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if pt2 {
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d := CreateDisc(7, 11, 0)
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allDiscs = append(allDiscs, *d)
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}
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var numTicks int
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for !AllDiscsAlign(allDiscs) {
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numTicks++
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TickAllDiscs(allDiscs)
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if verbose {
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PrintStatus(allDiscs)
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}
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}
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fmt.Println("Total Ticks: ", numTicks)
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}
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func PrintStatus(d []Disc) {
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fmt.Print("[ ")
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for i := range d {
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fmt.Printf("(%2d/%2d) ", d[i].currPos, d[i].ttlPos)
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}
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fmt.Println("]")
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}
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func TickAllDiscs(d []Disc) {
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for i := range d {
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d[i].Tick()
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}
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}
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func AllDiscsAlign(d []Disc) bool {
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for i := range d {
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if (d[i].currPos+d[i].id)%d[i].ttlPos != 0 {
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return false
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}
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}
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return true
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}
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type Disc struct {
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id int
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ttlPos int
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currPos int
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startPos int
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numTicks int
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bufTicks int
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}
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func CreateDisc(id, ttl, curr int) *Disc {
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d := new(Disc)
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d.id = id
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d.ttlPos = ttl
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d.currPos = curr
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d.startPos = curr
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return d
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}
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func (d *Disc) Tick() {
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d.currPos = (d.currPos + 1) % d.ttlPos
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d.numTicks++
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}
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func stdinToStringSlice() []string {
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var input []string
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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input = append(input, scanner.Text())
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}
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return input
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}
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func atoi(i string) int {
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var ret int
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var err error
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if ret, err = strconv.Atoi(i); err != nil {
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log.Fatal("Invalid Atoi")
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}
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return ret
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}
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func ClearScreen() {
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fmt.Print("\033[H\033[2J")
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}
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