start day 10

10/input

@@ -0,0 +1,45 @@
+123454078104569871014321021321012349878967874
+002965169245678562105489110456701256767456983
+411873254324329453456976522343812323454305432
+320984589010012306567887431098943210563216761
+458976673407873210698790346787654329874109850
+367887654356912348787891245497645698556780943
+656792343105401059678712312338562107649891234
+343001643234332769589600404329431236032321104
+102198756121049878465521565010120345121430213
+234567987012156912374437674320345034560345412
+126898776103457809983398983011276127672126703
+045678945434967618812287034567689018984035894
+034989876325898507600176127698548109123445665
+121070165016785216010165018345630678006510778
+015676234245234345323234509216721565217329889
+104389892104101059654965432101892674398456788
+010210743233298128760870123438984583212105998
+327805654654567637201256754347673294303614854
+476912348723498542112349861243100185454783763
+585210239010101443009659870652231256765692152
+694332108212012356788778778701645899801087001
+783445098302345653299894389614556732112396503
+612956789401298764108763210543678945013765412
+107810987567889655895654101012109876894894321
+016721076101910346781565092325012345765765010
+145432345234581232690478783234540332345654321
+298703876501698701541089654129651231056310145
+387212965012787650132108543098774340987234236
+456903454323456043236719612012589656891105687
+125876561210798101045898703343478797650112793
+034329870325887232784387643296556788943289832
+105610711456976545693211234187645019850176541
+612789804567803456789800105098732134567654320
+523898714326512101234764306789678325478956010
+630145625613456780345605219812569210329547854
+549234034702102395653216984503431678017632903
+678432129899801234764567893689120589098701012
+569562101234710109803891012778021432176512343
+450691032105676541012764569865434501089400154
+541782145694589132123453678345123671078321965
+432679238785410016787652101254010982361267873
+121018019856321125696545610763010973450398654
+038967025657689434545236789892129887650367743
+127652134768976521430129865430034796341459812
+234543089867987010321010178921015601232378103

10/main.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func findTrailheads(tmap [][]int) [][]int {
+  trailheadsPositions := [][]int{}
+  for i:=range tmap {
+    for j:=range tmap[i] {
+      if tmap[i][j] == 0 {
+        trailheadsPositions = append(trailheadsPositions, []int{i,j})
+      }
+    }
+  }
+  return trailheadsPositions
+}
+
+func nextSteps(tmap [][]int, currentPosition []int) ([][]int, bool) {
+  paths := [][]int{}
+  found := false
+  if currentPosition[0] - 1 >= 0 && tmap[currentPosition[0]-1][currentPosition[1]] == tmap[currentPosition[0]][currentPosition[1]] + 1 {
+    paths = append(paths, []int{currentPosition[0]-1,currentPosition[1]})
+    found = true
+  } 
+  if currentPosition[0] + 1 < len(tmap) && tmap[currentPosition[0]+1][currentPosition[1]] == tmap[currentPosition[0]][currentPosition[1]] + 1 {
+    paths = append(paths, []int{currentPosition[0]+1,currentPosition[1]})
+    found = true
+  } 
+  if currentPosition[1] + 1 < len(tmap[currentPosition[0]]) && tmap[currentPosition[0]][currentPosition[1]+1] == tmap[currentPosition[0]][currentPosition[1]] + 1 {
+    paths = append(paths, []int{currentPosition[0],currentPosition[1]+1})
+    found = true
+  } 
+  if currentPosition[1] - 1 >= 0 && tmap[currentPosition[0]][currentPosition[1]-1] == tmap[currentPosition[0]][currentPosition[1]] + 1 {
+    paths = append(paths, []int{currentPosition[0],currentPosition[1]-1})
+    found = true
+  } 
+  return paths, found
+}
+
+func calcPath(tmap [][]int, start []int) [][]int {
+  path := [][]int{start}
+  for i:=1;i<=9;i++ {
+    nextStep, found := nextSteps(tmap,path[len(path)-1])
+    if ! found {
+      break
+    } else {
+      path = append(path, nextStep...)
+    }
+  }
+  return path
+}
+
+func main() {
+  file, _ := os.Open("test")
+//  file, _ := os.Open("input")
+  defer file.Close()
+  scanner := bufio.NewScanner(file)
+  tmap := [][]int{}
+  for scanner.Scan() {
+    line := scanner.Text()
+    level := strings.Split(line,"")
+    levelInt := []int{}
+    for i:=range level {
+      levelInteger, _ := strconv.Atoi(level[i])
+      levelInt = append(levelInt, levelInteger)
+    }
+    tmap = append(tmap, levelInt)
+  }
+  trailheadsPositions := findTrailheads(tmap)
+  for i := range trailheadsPositions {
+    path := calcPath(tmap,trailheadsPositions[i])
+    fmt.Println(path)
+    if len(path) == 10 {
+      
+    }
+  }
+}

10/test

@@ -0,0 +1,8 @@
+89010123
+78121874
+87430965
+96549874
+45678903
+32019012
+01329801
+10456732