i=3 212549 62825 0 12345 252549 目同 01234 5 temp i=5 1621 2525*49 5 temp7 21 25 49 25* 16 08 0 1 2 3 4 5 0 1 2 3 4 5 temp 21 25 49 25* 16 i = 4 08 0 1 2 3 4 5 temp 21 25 49 16 25* 08 i = 5 i = 3 25* 16 08