38 lines
1.0 KiB
TypeScript
38 lines
1.0 KiB
TypeScript
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const input = await Deno.readTextFile("example.txt");
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const lines = input.split("\n").map(x => x.trim()).filter(x => x.length > 0).map(x=>x.split(""));
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const width = lines[0].length;
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const height = lines.length;
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for (let i = 0; i < width; i++) {
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let place = 0;
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for (let j = 0; j < height; j++) {
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const ch = lines[j][i];
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if(ch === "O"){
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//swap
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const tmp = lines[place][i];
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lines[place][i] = ch;
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lines[j][i] = tmp;
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place++;
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}
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else if(ch === "."){
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// do nothing
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}
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else if(ch === "#"){
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place = j + 1;
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}
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else{
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throw new Error(`unknown char ${ch}`);
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}
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}
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}
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await Deno.writeTextFile("tf.txt", lines.map(x=> x.join("")).join("\n"));
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const answer = lines.map((x, i) => {
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// count O
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const count = x.map(y=> y === "O" ? 1 : 0 as number).reduce((acc, x) => acc + x, 0);
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return (lines.length-i) * count;
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}).reduce((a, b) => a + b, 0);
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console.log(answer);
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