6-66  ʹrangeֵСֵ֮
>> A=[1 5 8 24]
A =
     1     5     8    24
>>  range(A)
ans =
    23
>>  B=randn(4)
B =
    0.6900    0.6686   -0.1567    1.4151
    0.8156    1.1908   -1.6041   -0.8051
    0.7119   -1.2025    0.2573    0.5287
    1.2902   -0.0198   -1.0565    0.2193
>> range(B)
ans =
    0.6003    2.3933    1.8614    2.2202
>>
