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refactor mostcommon at index
continuous-integration/drone/push Build is passing Details

This commit is contained in:
Ben Harris 2021-12-03 12:08:15 -05:00
parent 7baf9b8bb5
commit 72e81981a3
1 changed files with 5 additions and 4 deletions
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9
aoc2021/Day03.cs
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@ -35,12 +35,14 @@ public sealed class Day03 : Day
{
var o = _report;
var c = _report;
char MostCommon(int i, IReadOnlyCollection<string> report) =>
report.Count(r => r[i] == '1') >= report.Count / 2.0 ? '1' : '0';
var i = 0;
while (o.Count > 1)
{
var most = o.Count(r => r[i] == '1') >= o.Count / 2.0 ? '1' : '0';
o = o.Where(r => r[i] == most).ToList();
o = o.Where(r => r[i] == MostCommon(i, o)).ToList();
i++;
}
var o2 = Convert.ToInt64(o.Single(), 2);
@ -48,8 +50,7 @@ public sealed class Day03 : Day
i = 0;
while (c.Count > 1)
{
var most = c.Count(r => r[i] == '1') >= c.Count / 2.0 ? '0' : '1';
c = c.Where(r => r[i] == most).ToList();
c = c.Where(r => r[i] != MostCommon(i, c)).ToList();
i++;
}
var co2 = Convert.ToInt64(c.Single(), 2);