Initialization
/* Let puz be the initial configuration, the integers 1..16 in row major order. */
int [][] puz = new int [4][4];
for (int r = 0; r < 4; r++)
for (int c = 0; c < 4; c++)
puz[r][c] = ____________________;
/* Let puz be the initial configuration, the integers 1..16 in row major order. */
int [][] puz = new int [4][4];
for (int r = 0; r < 4; r++)
for (int c = 0; c < 4; c++)
puz[r][c] = ____________________________;