C语言解数独程序的源码

 #include  #include  #define SIZE 9 #define get_low_bit(x) ((~x&(x-1))+1) struct{ int left; char num; char try; }board[SIZE][SIZE]; int bit2num(int bit) { switch(bit){ case 1:case 2: return bit; case 4: return 3; case 8: return 4; case 16: return 5; case 32: return 6; case 64: return 7; case 128: return 8; case 256: return 9; } } void printf_res() { int i, j, k; for(i=0; i 0) printf("\033[0;31m%2d\033[0m", board[i][j].num); else printf("%2d", board[i][j].try); } printf("|\n"); } for(i=0; i 0) sub(i, j, 1<<(board[i][j].num-1)); else if(board[i][j].try > 0) sub(i, j, 1<<(board[i][j].try-1)); } void add(int i, int j, int bit) { int k, m; for(k=0; k 0) solve(pos+1); else for(left=board[i][j].left; left; left&=(left-1)) { bit = get_low_bit(left); sub(i, j, bit); board[i][j].try = bit2num(bit); solve(pos+1); add(i, j, bit); board[i][j].try=0; init(); } } int main() { int i, j, c; for(i=0; i'9') ; board[i][j].num = c-'0'; board[i][j].try = 0; board[i][j].left = 0x0001FF; } init(); solve(0); return 0; }