单项选择题
A.(102,87,100,79,82,62,84,42,22,12,68) B.(102,100,87,84,82,79,68,62,42,22,12) C.(12,22,42,62,68,79,82,84,87,100,102) D.(102,87,42,79,82,62,68,100,84,12,22)
A.k B.n C.n-k D.n+k
A.1.5 B.1.7 C.2.0 D.2.3