def parseInput(input: String): List[ArrayBuffer[String]] = {
val result = List(
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String](),
ArrayBuffer[String]()
);
input
.split("\n")
.dropRight(1)
.map((line) => {
line
.grouped(4)
.zip(result)
.foreach((value, col) => {
val extracted = value.substring(1, 2);
if extracted != " " then {
col += value.substring(1, 2);
}
});
});
result
}
def parseInstruction(instruction: String): List[(Int, Int, Int)] = {
instruction
.split("\n")
.map((line) => {
line
.split(" ")
.map((splited) => splited.toIntOption)
.filter((value) => value.isDefined)
.grouped(3)
.map((value) =>
(value.apply(0).get, value.apply(1).get, value.apply(2).get)
)
.next()
})
.toList
}def part1(input: String, instruction: String) = {
val processedInput = parseInput(input);
val processedInstruction = parseInstruction(instruction);
processedInstruction.foreach((count, from, to) => {
val fromStack = processedInput.apply(from - 1);
val toStack = processedInput.apply(to - 1);
val target = ArrayBuffer[String]();
Range(0, count).reverse.map((i) => {
target.addOne(fromStack.apply(i));
})
toStack.insertAll(0, target);
fromStack.remove(0, count);
})
print("Day 5 Part 1: ");
processedInput.foreach((column) => print(column.head));
println();
}其實就是 Part 1 的 code 去掉 Reverse 啊 lmao
def part2(input: String, instruction: String) = {
val processedInput = parseInput(input);
val processedInstruction = parseInstruction(instruction);
processedInstruction.foreach((count, from, to) => {
val fromStack = processedInput.apply(from - 1);
val toStack = processedInput.apply(to - 1);
val target = ArrayBuffer[String]();
Range(0, count).map((i) => {
target.addOne(fromStack.apply(i));
})
toStack.insertAll(0, target);
fromStack.remove(0, count);
})
print("Day 5 Part 2: ");
processedInput.foreach((column) => print(column.head));
println();
}