introduce bitloops

2026-01-12 19:32:05 +01:00
parent c7d67bf778
commit 368473c80f
3 changed files with 27 additions and 22 deletions
--- a/src/test/java/puzzle/MainTest.java
+++ b/src/test/java/puzzle/MainTest.java
@@ -164,6 +164,7 @@ public class MainTest {
      Assertions.assertEquals(301794542151533187L, res.filled().grid().grid().lo);
      Assertions.assertEquals(193L, res.filled().grid().grid().hi);
   }
+   boolean isLetter(byte b) { return (b & 64) != 0; }
   @Test
   public void testIsLetterA() {
      assertTrue(isLetter((byte) 'A'));