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27 lines
605 B
27 lines
605 B
2 years ago
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package class28;
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public class Problem_0036_ValidSudoku {
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public static boolean isValidSudoku(char[][] board) {
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boolean[][] row = new boolean[9][10];
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boolean[][] col = new boolean[9][10];
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boolean[][] bucket = new boolean[9][10];
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for (int i = 0; i < 9; i++) {
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for (int j = 0; j < 9; j++) {
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int bid = 3 * (i / 3) + (j / 3);
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if (board[i][j] != '.') {
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int num = board[i][j] - '0';
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if (row[i][num] || col[j][num] || bucket[bid][num]) {
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return false;
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}
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row[i][num] = true;
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col[j][num] = true;
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bucket[bid][num] = true;
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}
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}
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}
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return true;
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}
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}
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