public static long ExecutePart2(SimpleComputer.Instruction[] input)
{
var program = input;
for (int indexToReplace = 0; indexToReplace < program.Length; indexToReplace++)
{
var oldInstruction = input[indexToReplace];
if (!TryToFixProgram(program, indexToReplace))
{
continue;
}
var result = SimpleComputer.ExecuteProgram(program, 1);
if (result.pc == input.Length)
{
return(result.acc);
}
program[indexToReplace] = oldInstruction;
}
return(-1);
}
public long ExecutePart1()
{
return((long)SimpleComputer.ExecuteProgram(_instructions, 1).acc);
}