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依据二维矩阵中的索引,获取三维数组中的第三维数据。
无非是拿 sub2ind 多捣鼓几下,N比较大时会比for循环快 clear; clc; close all; N = 200; size_a = [ 20, 20, 5 ]; a = reshape( [ 1 : 1 : prod( size...

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