Revert "Sort t's to front"

This reverts commit f31bb6b.

Author: EbbDrop

src/day23.rs

@@ -1,5 +1,4 @@
 use core::str;
-use std::cmp::Ordering;
 
 use aoc_runner_derive::aoc;
 use bitvec::array::BitArray;
@@ -104,17 +103,7 @@ pub fn part2(s: &str) -> &'static str {
         }
     }
 
-    vertecies.sort_unstable_by(|a, b| {
-        if (a.0 / 26) as u8 + b'a' == b't' && (b.0 / 26) as u8 + b'a' == b't' {
-            b.1.cmp(&a.1)
-        } else if (a.0 / 26) as u8 + b'a' == b't' {
-            Ordering::Less
-        } else if (b.0 / 26) as u8 + b'a' == b't' {
-            Ordering::Greater
-        } else {
-            b.1.cmp(&a.1)
-        }
-    });
+    vertecies.sort_unstable_by(|a, b| b.1.cmp(&a.1));
     let mut i = vertecies.len() - 1;
     while vertecies[i].1 == 0 {
         i -= 1;
@@ -152,6 +141,7 @@ pub fn part2(s: &str) -> &'static str {
     }
 }
 
+// Using this algorithm: https://web.archive.org/web/20160911054636/http://www.dcs.gla.ac.uk/~pat/jchoco/clique/indSetMachrahanish/papers/tomita2003.pdf
 fn expand(
     mut r: &mut [(u16, u16)],
     g: &BitArray<[u64; BAL]>,