10_2

day10/index.js

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+import { readFileSync } from "fs";
+
+const input = readFileSync("instructions.txt", "utf-8");
+
+let display = "";
+
+function drawCRT(cycle, pointer) {
+    if((cycle - 1) % 40 === 0) display += "\n"
+
+    if(Math.abs(((cycle - 1) % 40) - pointer) <= 1) display += "#";
+    else display += ".";
+}
+
+let xRegister = 1;
+let cycle = 0;
+
+input.split('\n').forEach(line => {
+    const instruction = line.split(' ');
+
+    switch(instruction[0]) {
+        case "noop":
+            cycle++;
+            drawCRT(cycle, xRegister);
+            break;
+        case "addx":
+            cycle++;
+            drawCRT(cycle, xRegister);
+            cycle++;
+            drawCRT(cycle, xRegister);
+            xRegister += parseInt(instruction[1]);
+            break;
+    }
+
+
+});
+
+console.log(display)

day10/instructions.txt

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+addx 1
+addx 4
+addx -2
+addx 3
+addx 3
+addx 1
+noop
+addx 5
+noop
+noop
+noop
+addx 5
+addx 2
+addx 3
+noop
+addx 2
+addx 4
+noop
+addx -1
+noop
+addx 3
+addx -10
+addx -17
+noop
+addx -3
+addx 2
+addx 25
+addx -24
+addx 2
+addx 5
+addx 2
+addx 3
+noop
+addx 2
+addx 14
+addx -9
+noop
+addx 5
+noop
+noop
+addx -2
+addx 5
+addx 2
+addx -5
+noop
+noop
+addx -19
+addx -11
+addx 5
+addx 3
+noop
+addx 2
+addx 3
+addx -2
+addx 2
+noop
+addx 3
+addx 4
+noop
+noop
+addx 5
+noop
+noop
+noop
+addx 5
+addx -3
+addx 8
+noop
+addx -15
+noop
+addx -12
+addx -9
+noop
+addx 6
+addx 7
+addx -6
+addx 4
+noop
+noop
+noop
+addx 4
+addx 1
+addx 5
+addx -11
+addx 29
+addx -15
+noop
+addx -12
+addx 17
+addx 7
+noop
+noop
+addx -32
+addx 3
+addx -8
+addx 7
+noop
+addx -2
+addx 5
+addx 2
+addx 6
+addx -8
+addx 5
+addx 2
+addx 5
+addx 17
+addx -12
+addx -2
+noop
+noop
+addx 7
+addx 9
+addx -8
+addx 2
+addx -33
+addx -1
+addx 2
+noop
+addx 26
+addx -22
+addx 19
+addx -16
+addx 8
+addx -1
+addx 3
+addx -2
+addx 2
+addx -17
+addx 24
+addx 1
+noop
+addx 5
+addx -1
+noop
+addx 5
+noop
+noop
+addx 1
+noop
+noop