31 lines
774 B
JavaScript
31 lines
774 B
JavaScript
var pc = 0;
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var registers = {a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0};
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var instructions = require("fs").readFileSync("input.txt").toString().split("\n").filter((a)=>(a));
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var numMul = 0;
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while((pc >= 0) && (pc < instructions.length)){
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val = a => ((isNaN(parseInt(a))) ? (registers[a]) : (parseInt(a)));
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var instruction = instructions[pc];
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var parts = instruction.split(" ");
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var pcstart = pc;
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switch(parts[0]){
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case "set":
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registers[parts[1]] = val(parts[2]);
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break;
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case "sub":
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registers[parts[1]] -= val(parts[2]);
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break;
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case "mul":
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numMul++;
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registers[parts[1]] *= val(parts[2]);
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break;
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case "jnz":
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if(val(parts[1]) != 0){
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pc += (val(parts[2]) - 1);
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}
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break;
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}
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pc++;
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}
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console.log(numMul);
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console.log(registers);
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