55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
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const fs = require("fs");
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const text = fs.readFileSync("2019/05/input.txt", "utf-8");
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const userInput = 5;
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let memory = text.split(',').map(opcode => parseInt(opcode));
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function valueOf(index, paramMode) {
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return paramMode == "0" ? memory[memory[index]] : memory[index];
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}
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function fiveDig(value) {
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return value.toString().length < 5 ? fiveDig("0" + value) : value.toString();
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}
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let i = 0;
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while (true) {
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instruction = fiveDig(memory[i]);
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opcode = instruction.slice(3);
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if (opcode == '01') {
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memory[memory[i+3]] = valueOf(i+1, instruction[2]) + valueOf(i+2, instruction[1]);
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i+=4;
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} else if (opcode == '02') {
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memory[memory[i+3]] = valueOf(i+1, instruction[2]) * valueOf(i+2, instruction[1]);
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i+=4;
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} else if (opcode == '03') {
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console.log("IN "+userInput);
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memory[memory[i+1]] = userInput;
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i+=2;
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} else if (opcode == '04') {
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console.log("OUT "+valueOf(i+1, instruction[2]));
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i+=2;
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} else if (opcode == '05') {
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if (valueOf(i+1, instruction[2]) != 0) {
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i = valueOf(i+2, instruction[1])
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} else {
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i+=3;
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}
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} else if (opcode == '06') {
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if (valueOf(i+1, instruction[2]) == 0) {
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i = valueOf(i+2, instruction[1])
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} else {
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i+=3;
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}
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} else if (opcode == '07') {
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memory[memory[i+3]] = valueOf(i+1, instruction[2]) < valueOf(i+2, instruction[1]) ? 1 : 0;
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i+=4;
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} else if (opcode == '08') {
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memory[memory[i+3]] = valueOf(i+1, instruction[2]) == valueOf(i+2, instruction[1]) ? 1 : 0;
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i+=4;
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} else if (opcode == '99') {
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console.log("HLT")
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break;
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}
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}
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