Refactor intcode into separate module
This commit is contained in:
parent
3a3283bf72
commit
56dbed3418
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@ -8,3 +8,4 @@ edition = "2018"
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[dependencies]
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[dependencies]
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itertools = "0.8.2"
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itertools = "0.8.2"
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intcode = { path = "../intcode" }
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@ -0,0 +1 @@
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3,8,1001,8,10,8,105,1,0,0,21,30,51,76,101,118,199,280,361,442,99999,3,9,102,5,9,9,4,9,99,3,9,102,4,9,9,1001,9,3,9,102,2,9,9,101,2,9,9,4,9,99,3,9,1002,9,3,9,1001,9,4,9,102,5,9,9,101,3,9,9,1002,9,3,9,4,9,99,3,9,101,5,9,9,102,4,9,9,1001,9,3,9,1002,9,2,9,101,4,9,9,4,9,99,3,9,1002,9,2,9,1001,9,3,9,102,5,9,9,4,9,99,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,2,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,99,3,9,1001,9,1,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,102,2,9,9,4,9,3,9,101,1,9,9,4,9,3,9,102,2,9,9,4,9,3,9,101,1,9,9,4,9,3,9,102,2,9,9,4,9,99,3,9,1001,9,1,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,101,1,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,1002,9,2,9,4,9,3,9,1001,9,1,9,4,9,3,9,101,1,9,9,4,9,99,3,9,1001,9,1,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,1002,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,1001,9,1,9,4,9,3,9,1002,9,2,9,4,9,99,3,9,102,2,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,101,1,9,9,4,9,3,9,102,2,9,9,4,9,3,9,101,2,9,9,4,9,3,9,1001,9,1,9,4,9,3,9,101,1,9,9,4,9,3,9,101,1,9,9,4,9,3,9,1001,9,2,9,4,9,3,9,1001,9,2,9,4,9,99
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@ -1,212 +1,7 @@
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use itertools::Itertools;
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use intcode::*;
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use std::io;
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use std::io::BufRead;
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use std::ops::Range;
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#[derive(Debug)]
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enum Operation {
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Add { x: i64, y: i64, addr: usize },
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Multiply { x: i64, y: i64, addr: usize },
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Input { value: i64, addr: usize },
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Output { value: i64 },
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JumpIfTrue { value: i64, addr: i64 },
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JumpIfFalse { value: i64, addr: i64 },
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LessThan { first: i64, second: i64, addr: i64 },
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Equals { first: i64, second: i64, addr: i64 },
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}
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#[derive(Debug)]
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enum Mode {
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Immediate,
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Position,
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}
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enum ParameterPosition {
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First,
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Second,
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}
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struct Machine {
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pos: i64,
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tape: Vec<i64>,
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params: Vec<i64>,
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}
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impl Into<usize> for ParameterPosition {
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fn into(self) -> usize {
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match self {
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ParameterPosition::First => 2,
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ParameterPosition::Second => 3,
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}
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}
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}
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impl Into<Mode> for &char {
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fn into(self) -> Mode {
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match self {
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'0' => Mode::Position,
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'1' => Mode::Immediate,
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_ => unreachable!(),
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}
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}
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}
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fn get_next(input: &[i64], pos: &mut i64, mode: Mode) -> i64 {
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let value = input[*pos as usize];
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let next = match mode {
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Mode::Position => input[value as usize],
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Mode::Immediate => value,
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};
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*pos += 1;
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next
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}
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fn get_mode(raw_opcode: &[char], pos: ParameterPosition) -> Mode {
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raw_opcode.get::<usize>(pos.into()).unwrap_or(&'0').into()
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}
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#[rustfmt::skip]
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fn next_operation(machine: &mut Machine) -> Option<Operation> {
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let next = get_next(&machine.tape, &mut machine.pos, Mode::Immediate);
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let mut raw_opcode: Vec<_> = next.to_string().chars().collect();
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raw_opcode.reverse();
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match raw_opcode[0] {
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'1' => Some(Operation::Add {
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x: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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y: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate) as usize,
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}),
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'2' => Some(Operation::Multiply {
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x: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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y: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate) as usize,
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}),
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'3' => Some(Operation::Input {
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value: machine.params.pop().unwrap(),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate) as usize,
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}),
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'4' => Some(Operation::Output {
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value: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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}),
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'5' => Some(Operation::JumpIfTrue {
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value: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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addr: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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}),
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'6' => Some(Operation::JumpIfFalse {
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value: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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addr: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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}),
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'7' => Some(Operation::LessThan {
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first: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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second: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate),
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}),
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'8' => Some(Operation::Equals {
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first: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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second: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate),
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}),
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'9' => None,
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_ => unreachable!(),
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}
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}
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fn execute(op: Operation, input: &mut Vec<i64>, pos: &mut i64) -> Option<i64> {
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match op {
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Operation::Add { x, y, addr } => {
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input[addr as usize] = x + y;
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None
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}
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Operation::Multiply { x, y, addr } => {
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input[addr as usize] = x * y;
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None
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}
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Operation::Input { value, addr } => {
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input[addr] = value;
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None
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}
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Operation::Output { value } => Some(value),
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Operation::JumpIfTrue { value, addr } => {
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if value != 0 {
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*pos = addr
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}
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None
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}
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Operation::JumpIfFalse { value, addr } => {
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if value == 0 {
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*pos = addr
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}
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None
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}
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Operation::LessThan {
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first,
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second,
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addr,
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} => {
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input[addr as usize] = (first < second) as i64;
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None
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}
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Operation::Equals {
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first,
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second,
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addr,
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} => {
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input[addr as usize] = (first == second) as i64;
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None
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}
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}
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}
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fn find_max(range: Range<i64>, input: &Vec<i64>) -> i64 {
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range
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.permutations(5)
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.scan(0, |&mut mut acc, amps| {
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let mut machines: Vec<_> = amps
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.into_iter()
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.map(|amp| Machine {
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tape: input.clone(),
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pos: 0,
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params: vec![amp],
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})
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.collect();
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for state in (0..5).cycle() {
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let mut machine = machines.get_mut(state).unwrap();
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machine.params.insert(0, acc);
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match execute_machine(&mut machine) {
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Err(output) => acc = output,
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Ok(_) => break,
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}
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}
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Some(acc)
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})
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.max()
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.unwrap()
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}
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fn execute_machine(machine: &mut Machine) -> Result<i64, i64> {
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loop {
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match next_operation(machine) {
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Some(op) => {
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if let Some(o) = execute(op, &mut machine.tape, &mut machine.pos) {
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return Err(o);
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}
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}
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None => return Ok(machine.params.pop().unwrap()),
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}
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}
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}
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pub fn main() {
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pub fn main() {
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let input: Vec<_> = io::stdin()
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let input = read_input();
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.lock()
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.lines()
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.next()
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.unwrap()
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.unwrap()
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.split(',')
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.map(|n| n.parse().unwrap())
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.collect();
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println!("Part 1: {}", find_max(0..5, &input));
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println!("Part 1: {}", find_max(0..5, &input));
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println!("Part 2: {}", find_max(5..10, &input));
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println!("Part 2: {}", find_max(5..10, &input));
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}
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}
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@ -0,0 +1,10 @@
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[package]
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name = "intcode"
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version = "0.1.0"
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authors = ["kageru <kageru@encode.moe>"]
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edition = "2018"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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itertools = "0.8.2"
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@ -0,0 +1,204 @@
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use itertools::Itertools;
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use std::io::{self, BufRead};
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use std::ops::Range;
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#[derive(Debug)]
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enum Operation {
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Add { x: i64, y: i64, addr: usize },
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Multiply { x: i64, y: i64, addr: usize },
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Input { value: i64, addr: usize },
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Output { value: i64 },
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JumpIfTrue { value: i64, addr: i64 },
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JumpIfFalse { value: i64, addr: i64 },
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LessThan { first: i64, second: i64, addr: i64 },
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Equals { first: i64, second: i64, addr: i64 },
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}
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#[derive(Debug)]
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enum Mode {
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Immediate,
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Position,
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}
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enum ParameterPosition {
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First,
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Second,
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}
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struct Machine {
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pos: i64,
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tape: Vec<i64>,
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params: Vec<i64>,
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}
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impl Into<usize> for ParameterPosition {
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fn into(self) -> usize {
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match self {
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ParameterPosition::First => 2,
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ParameterPosition::Second => 3,
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}
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}
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}
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impl Into<Mode> for &char {
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fn into(self) -> Mode {
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match self {
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'0' => Mode::Position,
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'1' => Mode::Immediate,
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_ => unreachable!(),
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}
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}
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}
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fn get_next(input: &[i64], pos: &mut i64, mode: Mode) -> i64 {
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let value = input[*pos as usize];
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let next = match mode {
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Mode::Position => input[value as usize],
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Mode::Immediate => value,
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};
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*pos += 1;
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next
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}
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fn get_mode(raw_opcode: &[char], pos: ParameterPosition) -> Mode {
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raw_opcode.get::<usize>(pos.into()).unwrap_or(&'0').into()
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}
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#[rustfmt::skip]
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fn decode_next(machine: &mut Machine) -> Option<Operation> {
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let next = get_next(&machine.tape, &mut machine.pos, Mode::Immediate);
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let mut raw_opcode: Vec<_> = next.to_string().chars().collect();
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raw_opcode.reverse();
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match raw_opcode[0] {
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'1' => Some(Operation::Add {
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x: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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y: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate) as usize,
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}),
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'2' => Some(Operation::Multiply {
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x: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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y: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate) as usize,
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}),
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'3' => Some(Operation::Input {
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value: machine.params.pop().unwrap(),
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addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate) as usize,
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}),
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'4' => Some(Operation::Output {
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value: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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}),
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'5' => Some(Operation::JumpIfTrue {
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value: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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addr: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
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}),
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'6' => Some(Operation::JumpIfFalse {
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value: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
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addr: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
|
||||||
|
}),
|
||||||
|
'7' => Some(Operation::LessThan {
|
||||||
|
first: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
|
||||||
|
second: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
|
||||||
|
addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate),
|
||||||
|
}),
|
||||||
|
'8' => Some(Operation::Equals {
|
||||||
|
first: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::First)),
|
||||||
|
second: get_next(&machine.tape, &mut machine.pos, get_mode(&raw_opcode, ParameterPosition::Second)),
|
||||||
|
addr: get_next(&machine.tape, &mut machine.pos, Mode::Immediate),
|
||||||
|
}),
|
||||||
|
'9' => None,
|
||||||
|
_ => unreachable!(),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn execute(op: Operation, input: &mut Vec<i64>, pos: &mut i64) -> Option<i64> {
|
||||||
|
match op {
|
||||||
|
Operation::Add { x, y, addr } => {
|
||||||
|
input[addr as usize] = x + y;
|
||||||
|
None
|
||||||
|
}
|
||||||
|
Operation::Multiply { x, y, addr } => {
|
||||||
|
input[addr as usize] = x * y;
|
||||||
|
None
|
||||||
|
}
|
||||||
|
Operation::Input { value, addr } => {
|
||||||
|
input[addr] = value;
|
||||||
|
None
|
||||||
|
}
|
||||||
|
Operation::Output { value } => Some(value),
|
||||||
|
Operation::JumpIfTrue { value, addr } => {
|
||||||
|
if value != 0 {
|
||||||
|
*pos = addr
|
||||||
|
}
|
||||||
|
None
|
||||||
|
}
|
||||||
|
Operation::JumpIfFalse { value, addr } => {
|
||||||
|
if value == 0 {
|
||||||
|
*pos = addr
|
||||||
|
}
|
||||||
|
None
|
||||||
|
}
|
||||||
|
Operation::LessThan {
|
||||||
|
first,
|
||||||
|
second,
|
||||||
|
addr,
|
||||||
|
} => {
|
||||||
|
input[addr as usize] = (first < second) as i64;
|
||||||
|
None
|
||||||
|
}
|
||||||
|
Operation::Equals {
|
||||||
|
first,
|
||||||
|
second,
|
||||||
|
addr,
|
||||||
|
} => {
|
||||||
|
input[addr as usize] = (first == second) as i64;
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn find_max(range: Range<i64>, input: &Vec<i64>) -> i64 {
|
||||||
|
range
|
||||||
|
.permutations(5)
|
||||||
|
.scan(0, |&mut mut acc, amps| {
|
||||||
|
let mut machines: Vec<_> = amps
|
||||||
|
.into_iter()
|
||||||
|
.map(|amp| Machine {
|
||||||
|
tape: input.clone(),
|
||||||
|
pos: 0,
|
||||||
|
params: vec![amp],
|
||||||
|
})
|
||||||
|
.collect();
|
||||||
|
for state in (0..5).cycle() {
|
||||||
|
let mut machine = machines.get_mut(state).unwrap();
|
||||||
|
machine.params.insert(0, acc);
|
||||||
|
match execute_machine(&mut machine) {
|
||||||
|
Err(output) => acc = output,
|
||||||
|
Ok(_) => break,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
Some(acc)
|
||||||
|
})
|
||||||
|
.max()
|
||||||
|
.unwrap()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn execute_machine(machine: &mut Machine) -> Result<i64, i64> {
|
||||||
|
loop {
|
||||||
|
match decode_next(machine) {
|
||||||
|
Some(op) => {
|
||||||
|
if let Some(o) = execute(op, &mut machine.tape, &mut machine.pos) {
|
||||||
|
return Err(o);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
None => return Ok(machine.params.pop().unwrap()),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[rustfmt::skip]
|
||||||
|
pub fn read_input() -> Vec<i64> {
|
||||||
|
io::stdin().lock().lines().next().unwrap().unwrap().split(',').map(|n| n.parse().unwrap()).collect()
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod tests;
|
|
@ -0,0 +1,49 @@
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[allow(dead_code)]
|
||||||
|
fn parse_test_input(raw: &str) -> Vec<i64> {
|
||||||
|
raw.split(",").map(|x| x.parse().unwrap()).collect()
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_find_max() {
|
||||||
|
assert_eq!(
|
||||||
|
find_max(
|
||||||
|
0..5,
|
||||||
|
&parse_test_input("3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0")
|
||||||
|
),
|
||||||
|
43210
|
||||||
|
);
|
||||||
|
assert_eq!(
|
||||||
|
find_max(
|
||||||
|
0..5,
|
||||||
|
&parse_test_input("3,23,3,24,1002,24,10,24,1002,23,-1,23,101,5,23,23,1,24,23,23,4,23,99,0,0")
|
||||||
|
),
|
||||||
|
54321
|
||||||
|
);
|
||||||
|
assert_eq!(
|
||||||
|
find_max(
|
||||||
|
0..5,
|
||||||
|
&parse_test_input("3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0")
|
||||||
|
),
|
||||||
|
65210
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_find_max_with_loops() {
|
||||||
|
assert_eq!(
|
||||||
|
find_max(
|
||||||
|
5..10,
|
||||||
|
&parse_test_input("3,26,1001,26,-4,26,3,27,1002,27,2,27,1,27,26,27,4,27,1001,28,-1,28,1005,28,6,99,0,0,5")
|
||||||
|
),
|
||||||
|
139629729
|
||||||
|
);
|
||||||
|
assert_eq!(
|
||||||
|
find_max(
|
||||||
|
5..10,
|
||||||
|
&parse_test_input("3,52,1001,52,-5,52,3,53,1,52,56,54,1007,54,5,55,1005,55,26,1001,54,-5,54,1105,1,12,1,53,54,53,1008,54,0,55,1001,55,1,55,2,53,55,53,4,53,1001,56,-1,56,1005,56,6,99,0,0,0,0,10")
|
||||||
|
),
|
||||||
|
18216
|
||||||
|
);
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user