29 lines
720 B
Plaintext
29 lines
720 B
Plaintext
#include <stdio.h>
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int is_valid_state(int **board, int *borders, int *pos, int n);
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void get_cur_pos(int **board, int *pos, int n);
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void print_board(int **board, int n);
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int backtrack(int **board, int *borders, int rec_depth, int n)
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{
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int pos[2];
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get_cur_pos(board, pos, n);
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int y = pos[0];
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int x = pos[1];
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if (rec_depth == n * n)
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{
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return (1);
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}
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int counter = 0;
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while (++counter < n + 1)
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{
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board[y][x] = counter;
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print_board(board, n);
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if (is_valid_state(board, borders, pos, n) == 1)
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if (backtrack(board, borders, rec_depth + 1, n) == 1)
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return (1);
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board[y][x] = 0;
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}
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return (0);
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}
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