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base: smark:faaff8013f612ef64502e47a00d970f840da8122
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smark:main
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compare: smark:a7c0239f662ad0863cc62d993586e1dc2b76d014
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smark:main

No commits in common. "faaff8013f612ef64502e47a00d970f840da8122" and "a7c0239f662ad0863cc62d993586e1dc2b76d014" have entirely different histories.
faaff8013f ... a7c0239f66

4 changed files with 1 additions and 345 deletions
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3
2024/02/main.go
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@ -43,7 +43,7 @@ func (r report) isSave() bool {
return false return false
} }
for i := 0; i < len(r.levels)-1; i++ { // iterate til second last level for i := 0; i < len(r.levels)-1; i++ {
if !isValidLevelDifference(r.levels[i], r.levels[i+1]) { if !isValidLevelDifference(r.levels[i], r.levels[i+1]) {
return false return false
} }
@ -94,7 +94,6 @@ func (r report) isSaveWithDamper() bool {
func (r report) removeLevelByIndex(dropIndex int) report { func (r report) removeLevelByIndex(dropIndex int) report {
var newlevels []int var newlevels []int
// create new slice w/o passed index position
newlevels = append(newlevels, r.levels[:dropIndex]...) newlevels = append(newlevels, r.levels[:dropIndex]...)
newlevels = append(newlevels, r.levels[dropIndex+1:]...) newlevels = append(newlevels, r.levels[dropIndex+1:]...)

3
2024/03/main.go
View file

@ -20,7 +20,6 @@ func main() {
} }
func findAndExecuteInstructions(memory string) (res int) { func findAndExecuteInstructions(memory string) (res int) {
// find all `mul()` and save numbers as MatchGroup 1 + 2
re := regexp.MustCompile(`mul\((\d{1,3}),(\d{1,3})\)`) re := regexp.MustCompile(`mul\((\d{1,3}),(\d{1,3})\)`)
instructions := re.FindAllStringSubmatch(memory, -1) instructions := re.FindAllStringSubmatch(memory, -1)
@ -32,8 +31,6 @@ func findAndExecuteInstructions(memory string) (res int) {
} }
func findAndExecuteEnabledInstructions(memory string) (res int) { func findAndExecuteEnabledInstructions(memory string) (res int) {
// find all `mul()` and save numbers as MatchGroup 1 + 2
// save `do()` and `dont()` in MatchGroup 0
re := regexp.MustCompile(`mul\((\d{1,3}),(\d{1,3})\)|do\(\)|don't\(\)`) re := regexp.MustCompile(`mul\((\d{1,3}),(\d{1,3})\)|do\(\)|don't\(\)`)
instructions := re.FindAllStringSubmatch(memory, -1) instructions := re.FindAllStringSubmatch(memory, -1)

140
2024/04/input
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@ -1,140 +0,0 @@
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200
2024/04/main.go
View file

@ -1,200 +0,0 @@
package main
import (
"fmt"
"aoc/helper"
)
func main() {
grid := helper.ReadLinesToStringSlices()
// part 1
count := 0
for y := range grid {
for x := range grid[0] {
if grid[y][x] == 'X' {
count += findXMAS(grid, x, y)
}
}
}
fmt.Printf("XMAS count: %d\n", count)
// part 2
count = 0
for y := 1; y < len(grid)-1; y++ { // skip first & last row
for x := 1; x < len(grid[0])-1; x++ { // skip first & last column
if grid[y][x] == 'A' {
count += findCrossMAS(grid, x, y)
}
}
}
fmt.Printf("X-MAS count: %d\n", count)
}
func findXMAS(grid []string, startX int, startY int) (count int) {
minX, minY := 0, 0 // upper and left border is 0
maxY := len(grid) - 1 // lower border is len-1 (index start = 0)
maxX := len(grid[0]) - 1 // right border is len-1 (index start = 0)
XMAS := "XMAS"
// horizontal right
if startX+3 <= maxX { // check for enough space (pos + 3 = 4 characters for "XMAS")
found := true
for i := range 4 {
// check if gridposition at "i" has character for position "i"
// i=0 -> XMAS[0] -> "X"
// ..
// i=3 -> XMAS[3] -> "S"
if grid[startY][startX+i] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// horizontal left
if startX-3 >= minX {
found := true
for i := range 4 {
if grid[startY][startX-i] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// vertikal down
if startY+3 <= maxY {
found := true
for i := range 4 {
if grid[startY+i][startX] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// vertikal up
if startY-3 >= minY {
found := true
for i := range 4 {
if grid[startY-i][startX] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// diagonal down right
if startY+3 <= maxY && startX+3 <= maxX {
found := true
for i := range 4 {
if grid[startY+i][startX+i] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// diagonal down left
if startY+3 <= maxY && startX-3 >= minX {
found := true
for i := range 4 {
if grid[startY+i][startX-i] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// diagonal up right
if startY-3 >= minY && startX+3 <= maxX {
found := true
for i := range 4 {
if grid[startY-i][startX+i] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
// diagonal up left
if startY-3 >= minY && startX-3 >= minX {
found := true
for i := range 4 {
if grid[startY-i][startX-i] != XMAS[i] {
found = false
break
}
}
if found {
count++
}
}
return count
}
func findCrossMAS(grid []string, startX int, startY int) (count int) {
// M.S
// .A.
// M.S
found := grid[startY-1][startX-1] == 'M' && grid[startY-1][startX+1] == 'S' &&
grid[startY+1][startX-1] == 'M' && grid[startY+1][startX+1] == 'S'
if found {
count++
}
// M.M
// .A.
// S.S
found = grid[startY-1][startX-1] == 'M' && grid[startY-1][startX+1] == 'M' &&
grid[startY+1][startX-1] == 'S' && grid[startY+1][startX+1] == 'S'
if found {
count++
}
// S.M
// .A.
// S.M
found = grid[startY-1][startX-1] == 'S' && grid[startY-1][startX+1] == 'M' &&
grid[startY+1][startX-1] == 'S' && grid[startY+1][startX+1] == 'M'
if found {
count++
}
// S.S
// .A.
// M.M
found = grid[startY-1][startX-1] == 'S' && grid[startY-1][startX+1] == 'S' &&
grid[startY+1][startX-1] == 'M' && grid[startY+1][startX+1] == 'M'
if found {
count++
}
return count
}