02-28.txt

来自「MATLABR2006a基础教程」· 文本 代码 · 共 9 行

>> A = [1 2 3; 4 5 6; 7 8 9];

>> B = logical(eye(3))

>> A(B)

>> X = [1 0 4 -3 0 0 0 8 6];

>> indices = find(X)