public void Part1()
{
var a = (int[])Day5Input.Clone();
var i = 0;
var op = a[i] % 100;
while (op != 99)
{
var modes = a[i] / 100;
switch (op)
{
case 1:
var term11 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
modes /= 10;
var term12 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
a[a[i + 3]] = term11 + term12;
i += 4;
break;
case 2:
var term21 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
modes /= 10;
var term22 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
a[a[i + 3]] = term21 * term22;
i += 4;
break;
case 3:
a[a[i + 1]] = 1;
i += 2;
break;
case 4:
var output = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
TestContext.WriteLine(output.ToString());
i += 2;
break;
}
op = a[i] % 100;
}
}
public void Part2()
{
var a = (int[])Day5Input.Clone();
var i = 0;
var op = a[i] % 100;
while (op != 99)
{
var modes = a[i] / 100;
switch (op)
{
case 1:
var term11 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
modes /= 10;
var term12 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
a[a[i + 3]] = term11 + term12;
i += 4;
break;
case 2:
var term21 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
modes /= 10;
var term22 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
a[a[i + 3]] = term21 * term22;
i += 4;
break;
case 3:
a[a[i + 1]] = 5;
i += 2;
break;
case 4:
var output = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
TestContext.WriteLine(output.ToString());
i += 2;
break;
case 5:
var param51 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
if (param51 != 0)
{
modes /= 10;
var param52 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
i = param52;
}
else
{
i += 3;
}
break;
case 6:
var param61 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
if (param61 == 0)
{
modes /= 10;
var param62 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
i = param62;
}
else
{
i += 3;
}
break;
case 7:
var param71 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
modes /= 10;
var param72 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
a[a[i + 3]] = param71 < param72 ? 1 : 0;
i += 4;
break;
case 8:
var param81 = modes % 10 == 1 ? a[i + 1] : a[a[i + 1]];
modes /= 10;
var param82 = modes % 10 == 1 ? a[i + 2] : a[a[i + 2]];
a[a[i + 3]] = param81 == param82 ? 1 : 0;
i += 4;
break;
}
op = a[i] % 100;
}
}