没有什么问题啊; S, `& T8 X& E0 k
, [1 Z k7 `+ {$ c+ O
maskVector=rand(3,2); - E3 p) m9 Y- u, f. u( ?# voldMatrix=rand(2,3); - ]) {( c P. O H6 I" usize(maskVector,1) ~= size(oldMatrix,2)$ }7 }" |" G/ S3 C* e& H
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结果:/ t5 o! F: ^5 v, G2 z9 c
ans = + j% p+ n$ w! x" f8 G/ v 0