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Reformat code, remove unnecessary function

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This commit is contained in:
Chris Pickett
2022-12-21 13:27:12 -06:00
parent bb68e1d944
commit aba8631366
2 changed files with 13 additions and 23 deletions
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22
src/20.cs
View File

@ -2,28 +2,12 @@
internal class Day20 : Day
{
private List<(int num, int origIdx)> nums = new();
private readonly List<(long num, int origIdx)> nums = new();
internal override void Parse()
{
foreach (var line in Util.Parsing.ReadAllLines("20"))
{
nums.Add((int.Parse(line), nums.Count));
}
}
private static void mix(List<(int num, int origIdx)> mixedNums, IList<(int num, int origIdx)> origNums)
{
for (int i = 0; i < origNums.Count; i++)
{
if (origNums[i].num == 0)
{
continue;
}
var idx = mixedNums.FindIndex(n => n.origIdx == origNums[i].origIdx);
mixedNums.RemoveAt(idx);
var newIdx = Util.Math.Modulo(idx + origNums[i].num, mixedNums.Count);
mixedNums.Insert((int)newIdx, origNums[i]);
nums.Add((long.Parse(line), nums.Count));
}
}
@ -45,7 +29,7 @@ internal class Day20 : Day
internal override string Part1()
{
var mixedNums = new List<(int num, int origIdx)>(nums);
var mixedNums = new List<(long num, int origIdx)>(nums);
mix(mixedNums, nums);
var zeroIdx = mixedNums.FindIndex(n => n.num == 0);

14
src/Util/Math.cs
View File

@ -44,18 +44,24 @@ public static class Math
return (a * b) / GCD(a, b);
}
public static long Modulo(long numer, long denom) {
public static long Modulo(long numer, long denom)
{
// long q = numer / denom;
long r = numer % denom;
if (r < 0) {
if (denom > 0) {
if (r < 0)
{
if (denom > 0)
{
// q = q - 1;
r = r + denom;
} else {
}
else
{
// q = q + 1;
r = r - denom;
}
}
return r;
}
}