13 lines
396 B
Matlab
13 lines
396 B
Matlab
A=[1 2 3;4 5 6;7 8 9];
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[r,c]=size(A);
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% 判断并把A中大于8和小于2的元素全部调整为0
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for i=1:1:r
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for j=1:1:c
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if (A(i,j)>8 || A(i,j)<2)
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A(i,j)=0;
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end
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end
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end
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% 改写
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b=(A <= 8 & A >= 2); % 判断A中小于等于8和大于等于2的元素，结果是逻辑值0/1
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A=A.*b %实现A中大于8和小于2的元素全部调整为0，基于矩阵的点乘 |