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authorj-james2020-12-01 05:17:13 +0000
committerj-james2020-12-01 05:17:13 +0000
commitb23ea9372ae92b2add77213393041c62cba9a75b (patch)
tree0e4deb435849ff5a5fb0a4ce93bcd5beac5f386c /two.go
parent73f5728472dc5ffba612b0aead3126c63dd8b7d2 (diff)
Move 2019 Advent of Code work into its own folder
Diffstat (limited to 'two.go')
-rw-r--r--two.go66
1 files changed, 0 insertions, 66 deletions
diff --git a/two.go b/two.go
deleted file mode 100644
index 8108c87..0000000
--- a/two.go
+++ /dev/null
@@ -1,66 +0,0 @@
-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
-}