advent-of-code/2019
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Day 5 solution

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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.
This commit is contained in:
Chris Pickett
2022-06-13 15:29:18 -05:00
parent bdd007bb4d
commit acef5fdc12
5 changed files with 390 additions and 34 deletions
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28
days/02.go
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@ -18,19 +18,20 @@ func (d Day02) Num() int {
return 2
}
func (d *Day02) getProgramWithParams(param1, param2 int64) utilities.IntcodeProgram {
program := make(utilities.IntcodeProgram, len(d.program))
copy(program, d.program)
program[1] = param1
program[2] = param2
return program
func (d *Day02) setParams(param1, param2 int64) {
d.program.Reset()
d.program.SetMemory(1, param1)
d.program.SetMemory(2, param2)
}
func (d *Day02) Part1() string {
program := d.getProgramWithParams(12, 2)
program.Run()
d.setParams(12, 2)
d.program.Run()
return fmt.Sprintf("Position 0 = %s%d%s", utilities.TextBold, program[0], utilities.TextReset)
if d.program.GetMemory(0) != 4138658 {
panic("")
}
return fmt.Sprintf("Position 0 = %s%d%s", utilities.TextBold, d.program.GetMemory(0), utilities.TextReset)
}
func (d *Day02) Part2() string {
@ -41,10 +42,10 @@ func (d *Day02) Part2() string {
found := false
for noun = 0; noun <= 99; noun++ {
for verb = 0; verb <= 99; verb++ {
program := d.getProgramWithParams(noun, verb)
program.Run()
d.setParams(noun, verb)
d.program.Run()
if program[0] == sentinel {
if d.program.GetMemory(0) == sentinel {
found = true
break
}
@ -58,6 +59,9 @@ func (d *Day02) Part2() string {
if !found {
panic("!found")
}
if noun != 72 || verb != 64 {
panic("")
}
return fmt.Sprintf("%d created by noun=%d, verb=%d. 100 * noun + verb = %s%d%s",
sentinel,