Parnic
acef5fdc12
This required an overhaul of the intcode machine to actually be its own type that could operate on its own memory and stuff. So I had to touch day 2 to make it adhere to the new API. Feeling good about this foundation now. Until I get gobsmacked at some point later, which I expect to happen.
75 lines
1.2 KiB
Go
75 lines
1.2 KiB
Go
package days
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import (
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"fmt"
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"parnic.com/aoc2019/utilities"
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)
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type Day02 struct {
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program utilities.IntcodeProgram
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}
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func (d *Day02) Parse() {
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d.program = utilities.LoadIntcodeProgram("02p")
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}
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func (d Day02) Num() int {
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return 2
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}
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func (d *Day02) setParams(param1, param2 int64) {
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d.program.Reset()
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d.program.SetMemory(1, param1)
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d.program.SetMemory(2, param2)
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}
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func (d *Day02) Part1() string {
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d.setParams(12, 2)
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d.program.Run()
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if d.program.GetMemory(0) != 4138658 {
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panic("")
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}
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return fmt.Sprintf("Position 0 = %s%d%s", utilities.TextBold, d.program.GetMemory(0), utilities.TextReset)
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}
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func (d *Day02) Part2() string {
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sentinel := int64(19690720)
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var noun int64
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var verb int64
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found := false
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for noun = 0; noun <= 99; noun++ {
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for verb = 0; verb <= 99; verb++ {
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d.setParams(noun, verb)
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d.program.Run()
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if d.program.GetMemory(0) == sentinel {
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found = true
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break
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}
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}
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if found {
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break
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}
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}
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if !found {
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panic("!found")
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}
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if noun != 72 || verb != 64 {
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panic("")
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}
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return fmt.Sprintf("%d created by noun=%d, verb=%d. 100 * noun + verb = %s%d%s",
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sentinel,
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noun,
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verb,
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utilities.TextBold,
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100*noun+verb,
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utilities.TextReset,
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)
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}
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