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introduce bitloops

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This commit is contained in:
mike
2026-01-17 13:22:04 +01:00
parent 0c56fafeaa
commit 9102dcb922
10 changed files with 706 additions and 82 deletions
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19
src/main/java/puzzle/Masker.java
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@@ -436,6 +436,23 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
public long rhi() { return rhi; }
public static Clues createEmpty() { return new Clues(0, 0, 0, 0, 0, 0); }
public static Clues parse(String s) {
var c = createEmpty();
var lines = s.split("\n");
for (int r = 0; r < Math.min(lines.length, R); r++) {
var line = lines[r];
for (int col = 0; col < Math.min(line.length(), C); col++) {
char ch = line.charAt(col);
if (ch >= '0' && ch <= '3') {
int idx = Grid.offset(r, col);
byte dir = (byte) (ch - '0');
if ((idx & 64) == 0) c.setClueLo(1L << idx, dir);
else c.setClueHi(1L << (idx & 63), dir);
}
}
}
return c;
}
public boolean cluelessLo(int idx) {
if (!isClueLo(idx)) return false;
clearClueLo(~(1L << idx));
@@ -506,7 +523,7 @@ public record Masker(Rng rng, int[] stack, Clues cache) {
}
}
static record Slot(int key, long lo, long hi, DictEntry entry) {
public record Slot(int key, long lo, long hi, DictEntry entry) {
static final int BIT_FOR_DIR = 2;
static Slot from(int key, long lo, long hi, DictEntry entry) { return new Slot(key, lo, hi, entry); }