在MATLAB中，请记住向量化=速度.

Remember, in MATLAB, vectorizing = speed.

如果A是M x N矩阵，

If A is an M x N matrix,

A = rand(m,n);
minA = repmat(min(A), [size(A, 1), 1]);
normA = max(A) - min(A);               % this is a vector
normA = repmat(normA, [length(normA) 1]);  % this makes it a matrix
                                       % of the same size as A
normalizedA = (A - minA)./normA;  % your normalized matrix