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Diffstat (limited to '2019/go')
-rw-r--r--2019/go/day01.go40
-rw-r--r--2019/go/day02.go66
-rw-r--r--2019/go/day03.go156
-rw-r--r--2019/go/day04.go68
-rw-r--r--2019/go/day05.go131
-rw-r--r--2019/go/day06.go25
-rw-r--r--2019/go/day07.go141
-rw-r--r--2019/go/day08.go87
-rw-r--r--2019/go/day09.go166
-rw-r--r--2019/go/day10.go47
10 files changed, 927 insertions, 0 deletions
diff --git a/2019/go/day01.go b/2019/go/day01.go
new file mode 100644
index 0000000..cf27820
--- /dev/null
+++ b/2019/go/day01.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strconv"
+)
+
+func main() {
+ start, sum, fuelsum := 0, 0, 0
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if file[i] == '\n' {
+ arg, err := strconv.Atoi(string(file[start:i])) // i-1??
+ if err != nil {
+ panic(err)
+ }
+ start = i + 1
+ sum += (arg / 3) - 2
+ fuelsum += tyranny(arg)
+ }
+ }
+ fmt.Println(sum)
+ fmt.Println(fuelsum)
+}
+
+func tyranny(mass int) int {
+ subtotal := 0
+ for fuel := (mass / 3) - 2; fuel >= 0; fuel = (fuel / 3) - 2 {
+ subtotal += fuel
+ }
+ return subtotal
+}
diff --git a/2019/go/day02.go b/2019/go/day02.go
new file mode 100644
index 0000000..8108c87
--- /dev/null
+++ b/2019/go/day02.go
@@ -0,0 +1,66 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strconv"
+)
+
+func main() {
+ var slice []int
+ start, size := 0, 0
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if file[i] == ',' || file[i] == '\n' {
+ arg, err := strconv.Atoi(string(file[start:i])) // i-1??
+ if err != nil {
+ panic(err)
+ }
+ slice = append(slice, arg)
+ start = i + 1
+ size++
+ }
+ }
+ noun, verb := edocpo(slice, 19690720)
+ slice[1] = 12
+ slice[2] = 2
+ fmt.Println(opcode(slice)[0])
+ fmt.Println(100*noun + verb)
+}
+
+func opcode(slice []int) []int {
+ for i := 0; i < len(slice); i += 4 {
+ if slice[i] == 1 {
+ slice[slice[i+3]] = slice[slice[i+1]] + slice[slice[i+2]]
+ } else if slice[i] == 2 {
+ slice[slice[i+3]] = slice[slice[i+1]] * slice[slice[i+2]]
+ } else if slice[i] == 99 {
+ return slice
+ } else {
+ fmt.Println("Unsupported code", slice[i], "at", i)
+ os.Exit(0)
+ }
+ }
+ return slice
+}
+
+func edocpo(slice []int, output int) (int, int) {
+ var ecils []int
+ for i := 0; i < len(slice); i++ {
+ for j := 0; j < len(slice); j++ {
+ ecils = append([]int(nil), slice...) // reset ecils to slice
+ ecils[1], ecils[2] = i, j
+ if opcode(ecils)[0] == output {
+ return i, j
+ }
+ }
+ }
+ return -1, -1
+}
diff --git a/2019/go/day03.go b/2019/go/day03.go
new file mode 100644
index 0000000..2c79a18
--- /dev/null
+++ b/2019/go/day03.go
@@ -0,0 +1,156 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+)
+
+func main() {
+ var directions [][]string
+ var temp []string
+ start := 0
+
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if string(file[i]) == "," || file[i] == '\n' {
+ temp = append(temp, string(file[start:i]))
+ start = i + 1
+ if file[i] == '\n' {
+ directions[] = append(directions[], temp)
+ temp = nil
+ }
+ }
+ }
+ fmt.Println(directions)
+
+ // grid [][]int := boolgrid(directions)
+
+}
+
+// ax, ay, at := taxi(directions[0])
+// bx, by, bt := taxi(directions[1])
+// for i := 0; i < at; i++ {
+// for j := 0; j < at; j++ {
+// for k := 0; k <
+// ax[i][j]
+// }
+// }
+// abx, aby
+
+// grid = taxi(directions, taxi(directions2, grid))
+// min, x, y := 4000, 0, 0
+// for i := 0; i < len(grid); i++ {
+// for j := 0; j < len(grid); j++ {
+// x, y = int(math.Abs(float64(i-500))), int(math.Abs(float64(j-500)))
+// if grid[i][j] == 2 && x+y < min {
+// fmt.Println(i-500, j-500)
+// min = x + y
+// }
+
+// }
+// }
+// fmt.Println("Manhattan distance to intersection:", min)
+// }
+
+// func taxi(directions []string) ([]int, []int, int) {
+// var horislice, vertslice []int
+// total := 0
+// for i := 0; i < len(directions); i++ {
+// direction := directions[i][0]
+// displacement, err := strconv.Atoi(directions[i][1:])
+// if err != nil {
+// panic(err)
+// }
+// switch direction {
+// case 'L':
+// for j := 0; j < displacement; j++ {
+// horislice = append(horislice, horislice[total]-j)
+// vertslice = append(vertslice, vertslice[total])
+// total++
+// }
+// case 'R':
+// for j := 0; j < displacement; j++ {
+// horislice = append(horislice, horislice[total]+j)
+// vertslice = append(vertslice, vertslice[total])
+// total++
+// }
+// case 'U':
+// for j := 0; j < displacement; j++ {
+// vertslice = append(vertslice, vertslice[total]+j)
+// horislice = append(horislice, horislice[total])
+// total++
+// }
+// case 'D':
+// for j := 0; j < displacement; j++ {
+// vertslice = append(vertslice, vertslice[total]-j)
+// horislice = append(horislice, horislice[total])
+// total++
+// }
+// default:
+// fmt.Println("Unhandled direction", string(direction))
+// os.Exit(0)
+// }
+// }
+// return horislice, vertslice, total
+// }
+
+// func taxi(directions []string, grid [4000][4000]int) [4000][4000]int { // sign convention: an array, left to right, top to bottom, beginning in the top left corner
+// x, y := len(grid)/2, len(grid[0])/2 // start in center
+// var boolgrid [4000][4000]bool
+// for i := 0; i < len(directions); i++ {
+// direction := directions[i][0]
+// displacement, err := strconv.Atoi(directions[i][1:])
+// if err != nil {
+// panic(err)
+// }
+// switch direction {
+// case 'L':
+// for j := 0; j < displacement; j++ {
+// x--
+// if !boolgrid[x][y] {
+// boolgrid[x][y] = true
+// }
+// }
+// case 'R':
+// for j := 0; j < displacement; j++ {
+// x++
+// if !boolgrid[x][y] {
+// boolgrid[x][y] = true
+// }
+// }
+// case 'U':
+// for j := 0; j < displacement; j++ {
+// y--
+// if !boolgrid[x][y] {
+// boolgrid[x][y] = true
+// }
+// }
+// case 'D':
+// for j := 0; j < displacement; j++ {
+// y++
+// if !boolgrid[x][y] {
+// boolgrid[x][y] = true
+// }
+// }
+// default:
+// fmt.Println("Unhandled direction", string(direction))
+// os.Exit(0)
+// }
+// fmt.Println(string(direction), displacement, x, y)
+// }
+// for i := 0; i < len(grid); i++ {
+// for j := 0; j < len(grid[0]); j++ {
+// if boolgrid[i][j] {
+// grid[i][j]++
+// }
+// }
+// }
+// return grid // each element is equal to the numbers of wires on it
+// }
diff --git a/2019/go/day04.go b/2019/go/day04.go
new file mode 100644
index 0000000..7c901dc
--- /dev/null
+++ b/2019/go/day04.go
@@ -0,0 +1,68 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "math"
+ "os"
+ "strconv"
+)
+
+func main() {
+ smallest, largest, total, details := -1, -1, 0, 0
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if string(file[i]) == "-" {
+ smallest, err = strconv.Atoi(string(file[0:i]))
+ if err != nil {
+ panic(err)
+ }
+ largest, err = strconv.Atoi(string(file[i+1 : len(file)-1]))
+ if err != nil {
+ panic(err)
+ }
+ break
+ }
+ }
+
+ for i := smallest; i <= largest; i++ {
+ if criteria(i, false) {
+ total++
+ }
+ if criteria(i, true) {
+ details++
+ }
+ }
+ fmt.Println(total)
+ fmt.Println(details)
+}
+
+func criteria(password int, stage bool) bool {
+ prev := 0
+ for i := 0; i < 6; i++ {
+ if password/int(math.Pow(10, float64(5-i)))%10 < prev {
+ return false
+ }
+ prev = password / int(math.Pow(10, float64(5-i))) % 10
+ }
+ pascii := strconv.Itoa(password)
+ for i := 0; i < len(pascii)-1; i++ {
+ if string(pascii[i]) == string(pascii[i+1]) {
+ if !(len(pascii)-i > 2 && string(pascii[i]) == string(pascii[i+2])) {
+ if !stage { // Gross hack
+ return true
+ }
+ if !(i > 0 && string(pascii[i]) == string(pascii[i-1])) {
+ return true
+ }
+ }
+ }
+ }
+ return false
+}
diff --git a/2019/go/day05.go b/2019/go/day05.go
new file mode 100644
index 0000000..9ea4699
--- /dev/null
+++ b/2019/go/day05.go
@@ -0,0 +1,131 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strconv"
+)
+
+func main() {
+ var memory []int
+ start, size := 0, 0
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if file[i] == ',' || file[i] == '\n' {
+ arg, err := strconv.Atoi(string(file[start:i])) // i-1??
+ if err != nil {
+ panic(err)
+ }
+ memory = append(memory, arg)
+ start = i + 1
+ size++
+ }
+ }
+
+ // fmt.Println(execute(memory, size))
+ // noun, verb := etucexe(memory, size, 19690720)
+ // fmt.Println(100*noun + verb)
+ execute(memory, size)
+}
+
+func split(memory []int, i, size int) (int, int, int) {
+ mode := memory[i] / 100
+ three, two, one := i+3, i+2, i+1
+ if size-i > 1 {
+ if mode%10 == 0 {
+ one = memory[i+1]
+ }
+ if size-i > 2 {
+ if mode/10%10 == 0 {
+ two = memory[i+2]
+ }
+ if size-i > 3 {
+ if mode/100 == 0 {
+ three = memory[i+3]
+ }
+ }
+ }
+ }
+ return three, two, one
+}
+
+func execute(memory []int, size int) []int {
+ for i := 0; i < len(memory); {
+ opcode := memory[i] % 100
+ three, two, one := split(memory, i, size)
+ switch opcode {
+ case 1: // adds
+ memory[three] = memory[one] + memory[two]
+ i += 4
+ case 2: // multiplies
+ memory[three] = memory[one] * memory[two]
+ i += 4
+ case 3: // input
+ var input int
+ fmt.Print("Input: ")
+ resp, err := fmt.Scanf("%d", &input)
+ if err != nil {
+ fmt.Println(resp, err)
+ os.Exit(0)
+ }
+ memory[one] = input // not affected by modes
+ i += 2
+ case 4: // output
+ fmt.Println(memory[one])
+ i += 2
+ case 5: // jump-if-true
+ if memory[one] != 0 {
+ i = memory[two] // ???
+ } else {
+ i += 3
+ }
+ case 6: // jump-if-false
+ if memory[one] == 0 {
+ i = memory[two] // ???
+ } else {
+ i += 3
+ }
+ case 7: // less than
+ if memory[one] < memory[two] {
+ memory[memory[i+3]] = 1
+ } else {
+ memory[memory[i+3]] = 0
+ }
+ i += 4
+ case 8: // equals
+ if memory[one] == memory[two] {
+ memory[memory[i+3]] = 1
+ } else {
+ memory[memory[i+3]] = 0
+ }
+ i += 4
+ case 99: // terminate
+ return memory
+ default:
+ fmt.Println("Unsupported code", opcode, "at", i)
+ os.Exit(0)
+ }
+ }
+ return memory
+}
+
+func etucexe(memory []int, size, output int) (int, int) {
+ var volatile []int
+ for i := 0; i < len(memory); i++ {
+ for j := 0; j < len(memory); j++ {
+ volatile = append([]int(nil), memory...) // reset volatile to memory
+ volatile[1], volatile[2] = i, j
+ if execute(volatile, size)[0] == output {
+ return i, j
+ }
+ }
+ }
+ return -1, -1
+}
diff --git a/2019/go/day06.go b/2019/go/day06.go
new file mode 100644
index 0000000..646313d
--- /dev/null
+++ b/2019/go/day06.go
@@ -0,0 +1,25 @@
+package main
+
+import (
+ "io/ioutil"
+ "os"
+)
+
+func main() {
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+
+ for i := 0
+}
+
+func orbits(planet string) []string {
+
+ var chain []string
+
+ return chain
+}
diff --git a/2019/go/day07.go b/2019/go/day07.go
new file mode 100644
index 0000000..d71d827
--- /dev/null
+++ b/2019/go/day07.go
@@ -0,0 +1,141 @@
+package main
+
+import (
+ "fmt"
+ "os"
+ "strconv"
+)
+
+func main() {
+ var memory []int
+ size := 0
+ for i := 1; i < len(os.Args); i++ {
+ arg, err := strconv.Atoi(os.Args[i])
+ if err != nil {
+ panic(err)
+ }
+ memory = append(memory, arg)
+ size++
+ }
+ // fmt.Println(execute(memory, size))
+ // noun, verb := etucexe(memory, size, 19690720)
+ // fmt.Println(100*noun + verb)
+ // execute(memory, size)
+ fmt.Println(thrust(memory, size))
+}
+
+func thrust(memory []int, size int) int { // 120 total
+ max := 0
+ for a := 0; a < 5; a++ {
+ for b:=0; b < 4; b++ {
+ for c:=0;
+ }
+
+
+
+ a, b, c, d, e := i/10000, i/1000%10, i/100%100, i/10%1000, i%10000
+ a = execute(memory, size) // stdin fill this with a, 0
+ b = execute(memory, size) // stdin fill this with b, 0
+ c = execute(memory, size) // stdin fill this with c, 0
+ d = execute(memory, size) // stdin fill this with d, 0
+ e = execute(memory, size) // stdin fill this with e, 0
+ if (e > max) {
+ max = e
+ }
+ return max
+}
+
+func split(memory []int, i, size int) (int, int, int) {
+ mode := memory[i] / 100
+ three, two, one := i+3, i+2, i+1
+ if size-i > 1 {
+ if mode%10 == 0 {
+ one = memory[i+1]
+ }
+ if size-i > 2 {
+ if mode/10%10 == 0 {
+ two = memory[i+2]
+ }
+ if size-i > 3 {
+ if mode/100 == 0 {
+ three = memory[i+3]
+ }
+ }
+ }
+ }
+ return three, two, one
+}
+
+func execute(memory []int, size int) []int {
+ for i := 0; i < len(memory); {
+ opcode := memory[i] % 100
+ three, two, one := split(memory, i, size)
+ switch opcode {
+ case 1: // adds
+ memory[three] = memory[one] + memory[two]
+ i += 4
+ case 2: // multiplies
+ memory[three] = memory[one] * memory[two]
+ i += 4
+ case 3: // input
+ var input int
+ fmt.Print("Input: ")
+ resp, err := fmt.Scanf("%d", &input)
+ if err != nil {
+ fmt.Println(resp, err)
+ os.Exit(0)
+ }
+ memory[one] = input // not affected by modes
+ i += 2
+ case 4: // output
+ fmt.Println(memory[one])
+ i += 2
+ case 5: // jump-if-true
+ if memory[one] != 0 {
+ i = memory[two] // ???
+ } else {
+ i += 3
+ }
+ case 6: // jump-if-false
+ if memory[one] == 0 {
+ i = memory[two] // ???
+ } else {
+ i += 3
+ }
+ case 7: // less than
+ if memory[one] < memory[two] {
+ memory[memory[i+3]] = 1
+ } else {
+ memory[memory[i+3]] = 0
+ }
+ i += 4
+ case 8: // equals
+ if memory[one] == memory[two] {
+ memory[memory[i+3]] = 1
+ } else {
+ memory[memory[i+3]] = 0
+ }
+ i += 4
+ case 99: // terminate
+ return memory
+ default:
+ fmt.Println("Unsupported code", opcode, "at", i)
+ os.Exit(0)
+ }
+ }
+ return memory
+}
+
+func etucexe(memory []int, size, output int) (int, int) {
+ var volatile []int
+ for i := 0; i < len(memory); i++ {
+ for j := 0; j < len(memory); j++ {
+ volatile = append([]int(nil), memory...) // reset volatile to memory
+ volatile[1], volatile[2] = i, j
+ if execute(volatile, size)[0] == output {
+ return i, j
+ }
+ }
+ }
+ return -1, -1
+}
diff --git a/2019/go/day08.go b/2019/go/day08.go
new file mode 100644
index 0000000..74be0e1
--- /dev/null
+++ b/2019/go/day08.go
@@ -0,0 +1,87 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strconv"
+)
+
+func main() {
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ image := sliceify(file, 25, 6, len(file)/(25*6))
+
+ checksum(image)
+ decode(image)
+}
+
+func sliceify(file []byte, width int, height int, depth int) [][][]int {
+ var image [][][]int
+ pointer := 0
+
+ for i := 0; i < depth; i++ {
+ var b [][]int
+ for j := 0; j < height; j++ {
+ var a []int
+ for k := 0; k < width; k++ {
+ element, err := strconv.Atoi(string(file[pointer]))
+ if err != nil {
+ panic(err)
+ }
+ a = append(a, element)
+ pointer++
+ }
+ b = append(b, a)
+ }
+ image = append(image, b)
+ }
+ return image
+}
+
+func count(layer [][]int, val int) int {
+ total := 0
+ for i := 0; i < len(layer); i++ {
+ for j := 0; j < len(layer[i]); j++ {
+ if layer[i][j] == val {
+ total++
+ }
+ }
+ }
+ return total
+}
+
+func checksum(image [][][]int) {
+ min := count(image[0], 0)
+ layer := -1
+ for i := 0; i < len(image); i++ {
+ total := count(image[i], 0)
+ if total < min {
+ min = total
+ layer = i
+ }
+ }
+ fmt.Println(count(image[layer], 1) * count(image[layer], 2))
+}
+
+func decode(image [][][]int) {
+ for i := 0; i < len(image[0]); i++ {
+ for j := 0; j < len(image[0][0]); j++ {
+ for k := 0; k < len(image); k++ {
+ if image[k][i][j] == 0 {
+ fmt.Print(" ")
+ break
+ } else if image[k][i][j] == 1 {
+ fmt.Print("X")
+ break
+ }
+ }
+ }
+ fmt.Println()
+ }
+}
diff --git a/2019/go/day09.go b/2019/go/day09.go
new file mode 100644
index 0000000..432d780
--- /dev/null
+++ b/2019/go/day09.go
@@ -0,0 +1,166 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strconv"
+)
+
+func main() {
+ var memory []int
+ start, size := 0, 0
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if file[i] == ',' || file[i] == '\n' {
+ arg, err := strconv.Atoi(string(file[start:i])) // i-1??
+ if err != nil {
+ panic(err)
+ }
+ memory = append(memory, arg)
+ start = i + 1
+ size++
+ }
+ }
+ // fmt.Println(execute(memory, size))
+ // noun, verb := etucexe(memory, size, 19690720)
+ // fmt.Println(100*noun + verb)
+ execute(memory, size)
+}
+
+func split(memory []int, i, size, relative int) (int, int, int) {
+ mode := memory[i] / 100
+ three, two, one := i+3, i+2, i+1
+ if size-i > 1 {
+ if mode%10 == 0 {
+ one = memory[i+1]
+ } else if mode%10 == 2 {
+ one = relative + memory[i+1]
+ }
+ if size-i > 2 {
+ if mode/10%10 == 0 {
+ two = memory[i+2]
+ } else if mode%10 == 2 {
+ two = relative + memory[i+2]
+ }
+ if size-i > 3 {
+ if mode/100 == 0 {
+ three = memory[i+3]
+ } else if mode%10 == 2 {
+ three = relative + memory[i+3]
+ }
+ }
+ }
+ }
+ return three, two, one
+}
+
+func execute(memory []int, size int) []int {
+ /* todo: said "memory" functionality could be [pos, value]int
+ * i.e. when memory outside initial bounds wants to be accessed,
+ * it writes to a new element of this slice
+ * to access elements of the array, iterate through while checking each position
+ * additionally, to ensure there aren't conflicting "positions" in the array,
+ * do the above iteration process, if not, appends (this requires a total int)
+ */
+ /*
+ var swap [][2]int
+ */
+
+ // off-topic todo: https://www.golangprograms.com/example-arrays-of-arrays-arrays-of-slices-slices-of-arrays-and-slices-of-slices.html
+ // does this mean i can remove total / size because if so YES
+ for i := 0; i < 4000; i++ { // bad (example: no auto-termination due to 0 replacing nothingness)
+ memory = append(memory, 0)
+ }
+ relative := 0 // initial value of the relative base
+ for i := 0; i < len(memory); {
+ // bounds check
+ opcode := memory[i] % 100
+ three, two, one := split(memory, i, size, relative)
+ //fmt.Println("test:", opcode)
+ // actually what might work better than replacing all below would be
+ // checking if the next three values are out of bounds or not
+ // and then replacing them
+ // no bad idea large addition exists
+ switch opcode {
+ case 1: // adds
+ memory[three] = memory[one] + memory[two]
+ i += 4
+ case 2: // multiplies
+ // if out of bounds
+ // swap = append(swap, {memory[three], memory[one] * memory[two]})
+ // else
+ memory[three] = memory[one] * memory[two]
+ i += 4
+ case 3: // input
+ var input int
+ fmt.Print("Input: ")
+ resp, err := fmt.Scanf("%d", &input) // interesting note: anything following a valid integer is run by bash
+ if err != nil {
+ fmt.Println(resp, err)
+ os.Exit(0)
+ }
+ // out of bounds check
+ memory[one] = input // not affected by modes
+ i += 2
+ case 4: // output
+ fmt.Println(memory[one])
+ i += 2
+ case 5: // jump-if-true
+ if memory[one] != 0 {
+ i = memory[two]
+ } else {
+ i += 3
+ }
+ case 6: // jump-if-false
+ if memory[one] == 0 {
+ i = memory[two]
+ } else {
+ i += 3
+ }
+ case 7: // less than
+ if memory[one] < memory[two] {
+ memory[memory[i+3]] = 1 // instructions: _position_ given by the third parameter
+ } else {
+ memory[memory[i+3]] = 0
+ }
+ i += 4
+ case 8: // equals
+ if memory[one] == memory[two] {
+ memory[memory[i+3]] = 1
+ } else {
+ memory[memory[i+3]] = 0
+ }
+ i += 4
+ case 9: // adjusts the relative base
+ relative += memory[one] // interesting behavior when changing to i+1
+ i += 2
+ case 99: // terminate
+ return memory
+ default:
+ fmt.Println("Unsupported code", opcode, "at", i)
+ os.Exit(0)
+ }
+ }
+ return memory
+}
+
+func etucexe(memory []int, size, output int) (int, int) {
+ var volatile []int
+ for i := 0; i < len(memory); i++ {
+ for j := 0; j < len(memory); j++ {
+ volatile = append([]int(nil), memory...) // reset volatile to memory
+ volatile[1], volatile[2] = i, j
+ if execute(volatile, size)[0] == output {
+ return i, j
+ }
+ }
+ }
+ return -1, -1
+}
diff --git a/2019/go/day10.go b/2019/go/day10.go
new file mode 100644
index 0000000..562299a
--- /dev/null
+++ b/2019/go/day10.go
@@ -0,0 +1,47 @@
+package main
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+)
+
+func main() {
+ var region [][]bool
+ x, y, size := 0, 0, 0
+ if len(os.Args) < 2 {
+ panic("runtime error: missing operand")
+ }
+ file, err := ioutil.ReadFile(os.Args[1])
+ if err != nil {
+ panic(err)
+ }
+ for i := 0; i < len(file); i++ {
+ if file[i] == '#' {
+ region[x][y] = true
+ x++
+ } else if file[i] == '\n' {
+ x = 0
+ y++
+ }
+ }
+ max := 0
+ fmt.Println("Maximum detectable asteroids:", detect(region, x, y))
+}
+
+func detect(region [][]bool, width, height int) int {
+ for i:= 0; i < width; i++ {
+ for j := 0; j < height; j++ {
+ if region[i][j] {
+ for k:= 0; k < width; k++ {
+ for l := 0; l < width; l++ {
+
+ }
+ }
+ }
+ }
+ }
+
+ slope :=
+ return
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-16 15:29:31 +0000