50 lines
1.3 KiB
D
50 lines
1.3 KiB
D
module day2.part1and2;
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import std.file;
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import std.stdio;
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import std.string;
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import std.conv;
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import std.typecons;
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import std.traits;
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/**
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* Parses a submarine instruction.
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* Params:
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* op = The operation to parse.
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* Returns: A tuple containing the operation string and the value.
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*/
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Tuple!(string, int) parseOp(S)(S op) @safe pure if (isSomeString!S) {
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auto parts = op.split();
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return tuple(parts[0].to!string, parts[1].to!int);
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}
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void dive() {
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File f = File("source/day2/input.txt", "r");
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int depth = 0;
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int position = 0;
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foreach (line; f.byLine) {
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auto op = parseOp(line);
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if (op[0] == "up") depth -= op[1];
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if (op[0] == "down") depth += op[1];
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if (op[0] == "forward") position += op[1];
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}
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writefln("Final depth: %d, Final position: %d, Product: %d", depth, position, depth * position);
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}
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void dive2() {
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File f = File("source/day2/input.txt", "r");
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int aim = 0;
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int depth = 0;
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int position = 0;
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foreach (line; f.byLine) {
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auto op = parseOp(line);
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if (op[0] == "up") aim -= op[1];
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if (op[0] == "down") aim += op[1];
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if (op[0] == "forward") {
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position += op[1];
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depth += aim * op[1];
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}
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}
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writefln("Final depth: %d, Final position: %d, Product: %d", depth, position, depth * position);
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}
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