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//----------------------------------------------------- | |
// Setup. | |
static INPUT: &str = include_str!("data/q02.data"); | |
fn run_tape(ints: &mut Vec<usize>) -> usize { | |
let mut position = 0; | |
loop { | |
let opcode = &ints[position]; | |
match opcode { | |
1 => { | |
let a = ints[position + 1]; | |
let b = ints[position + 2]; | |
let dest = ints[position + 3]; | |
ints[dest] = ints[a] + ints[b]; | |
} | |
2 => { | |
let a = ints[position + 1]; | |
let b = ints[position + 2]; | |
let dest = ints[position + 3]; | |
ints[dest] = ints[a] * ints[b]; | |
} | |
99 => { | |
break; | |
} | |
_ => { | |
println!("ERROR!!!"); | |
break; | |
} | |
} | |
position += 4 | |
} | |
ints[0] | |
} | |
fn process_data_a(data: &str) -> usize { | |
let mut ints: Vec<usize> = data | |
.split(',') | |
.map(|i| i.parse::<usize>().unwrap()) | |
.collect(); | |
ints[1] = 12; | |
ints[2] = 2; | |
run_tape(&mut ints) | |
} | |
fn process_data_b(data: &str) -> usize { | |
let base: Vec<usize> = data | |
.split(',') | |
.map(|i| i.parse::<usize>().unwrap()) | |
.collect(); | |
for verb in 0..100 { | |
for noun in 0..100 { | |
let mut ints = base.clone(); | |
ints[1] = noun; | |
ints[2] = verb; | |
if run_tape(&mut ints) == 19_690_720 { | |
return 100 * noun + verb; | |
} | |
} | |
} | |
0 | |
} | |
//----------------------------------------------------- | |
// Questions. | |
q_impl!("2"); | |
#[test] | |
fn a() { | |
assert_eq!( | |
run_tape(&mut vec![1, 9, 10, 3, 2, 3, 11, 0, 99, 30, 40, 50]), | |
3500 | |
); | |
assert_eq!(run_tape(&mut vec![1, 0, 0, 0, 99]), 2); | |
assert_eq!(run_tape(&mut vec![2, 3, 0, 3, 99]), 2); | |
assert_eq!(run_tape(&mut vec![1, 1, 1, 4, 99, 5, 6, 0, 99]), 30); | |
} | |
#[test] | |
fn b() { | |
// assert_eq!(process_data_b(""), 0); | |
} |
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