base java functionality

2024-10-04 01:42:01 +02:00
parent c716f3c774
commit f286cbfbea
4 changed files with 203 additions and 0 deletions
--- a/java/Grid.java
+++ b/java/Grid.java
@@ -0,0 +1,137 @@
+
+public class Grid {
+    private Cell[] cells = new Cell[81];
+    private Cell[][] rows = new Cell[9][9];
+    private Cell[][] squares = new Cell[9][9];
+
+    public Grid() {
+        initializeCells();
+    }
+
+    public Grid(String repr) {
+        initializeCells();
+        parseRepr(repr);
+    }
+
+    private void initializeCells() {
+        for (int i = 0; i < 81; i++) {
+            this.cells[i] = new Cell(i);
+        }
+
+        for (int i = 0; i < 9; i++) {
+            for (int j = 0; j < 9; j++) {
+                Cell cell = this.cells[9*i +j];
+
+                this.rows[i][j] = cell;
+                this.squares[3*(i/3) +(j/3)][3*(i%3) +(j%3)] = cell;
+            }
+        }
+
+        for (int i = 0; i < 9; i++) {
+            for (int j = 0; j < 9; j++) {
+                Cell cell = this.cells[9*i +j];
+                int curr_square = 3*(i%3) + (j%3);
+
+                Cell[] row = new Cell[8];
+                Cell[] col = new Cell[8];
+                Cell[] square = new Cell[8];
+
+                int offset_row = 0;
+                int offset_col = 0;
+                int offset_square = 0;
+                for (int k = 0; k < 8; k++) {
+                    if (k == j) {
+                        offset_row = 1;
+                    }
+                    if (k == i) {
+                        offset_col = 1;
+                    }
+                    if (k == curr_square) {
+                        offset_square = 1;
+                    }
+
+                    row[k] = this.rows[i][k+offset_row];
+                    col[k] = this.rows[k+offset_col][j];
+                    square[k] = this.squares[3*(i/3) +(j/3)][k+offset_square];
+                }
+
+                cell.finishInit(row, col, square);
+            }
+        }
+    }
+
+    @Deprecated
+    public void setCell(int n, int v) {
+        this.cells[n].set(v);
+    }
+
+    private void parseRepr(String repr) {
+        String[] rows = repr.split("\\.");
+        assert rows.length == 9;
+        for (int i = 0; i < rows.length; i++) {
+            String line = rows[i];
+            assert line.length() == 9;
+
+            for (int j = 0; j < 9; j++) {
+                char c = line.charAt(j);
+                if (c != ' ') {
+                    int val = c - '0';
+                    this.cells[9*i +j].set(val);
+                }
+            }
+        }
+    }
+
+    @Override
+    public String toString() {
+        Character[][] values = new Character[27][27];
+        for (int i = 0; i < 27; i++) {
+            for (int j = 0; j < 27; j++) {
+                int value = 3*(i%3) +(j%3) +1;
+                values[i][j] = this.rows[i/3][j/3].probe(value)
+                    ? (char)('0'+value)
+                    : ' ';
+            }
+        }
+        String formatString = "%c%c%c %c%c%c %c%c%c | %c%c%c %c%c%c %c%c%c | %c%c%c %c%c%c %c%c%c\n";
+        String delim1 = "            |             |\n";
+        String delim2 = "---------------------------------------\n";
+        return 
+            String.format(formatString, (Object [])values[0])+
+            String.format(formatString, (Object [])values[1])+
+            String.format(formatString, (Object [])values[2])+
+            delim1+
+            String.format(formatString, (Object [])values[3])+
+            String.format(formatString, (Object [])values[4])+
+            String.format(formatString, (Object [])values[5])+
+            delim1+
+            String.format(formatString, (Object [])values[6])+
+            String.format(formatString, (Object [])values[7])+
+            String.format(formatString, (Object [])values[8])+
+            delim2+
+            String.format(formatString, (Object [])values[9])+
+            String.format(formatString, (Object [])values[10])+
+            String.format(formatString, (Object [])values[11])+
+            delim1+
+            String.format(formatString, (Object [])values[12])+
+            String.format(formatString, (Object [])values[13])+
+            String.format(formatString, (Object [])values[14])+
+            delim1+
+            String.format(formatString, (Object [])values[15])+
+            String.format(formatString, (Object [])values[16])+
+            String.format(formatString, (Object [])values[17])+
+            delim2+
+            String.format(formatString, (Object [])values[18])+
+            String.format(formatString, (Object [])values[19])+
+            String.format(formatString, (Object [])values[20])+
+            delim1+
+            String.format(formatString, (Object [])values[21])+
+            String.format(formatString, (Object [])values[22])+
+            String.format(formatString, (Object [])values[23])+
+            delim1+
+            String.format(formatString, (Object [])values[24])+
+            String.format(formatString, (Object [])values[25])+
+            String.format(formatString, (Object [])values[26]);
+    }
+}
+