%計算任意兩矢量的歐式距離function d = disteu(x, y)% Input:%       x, y:   輸入矢量.%% Output:%       d: 兩個輸入矢量的歐氏距離%% Note:%      歐氏距離公式： D = sum((x-y).^2).^0.5[M, N] = size(x);[M2, P] = size(y); if (M ~= M2)    error('Matrix dimensions do not match.')endd = zeros(N, P);copies = zeros(1,P);for n = 1:N        d(n,:) = sum((x(:, n+copies) - y) .^2, 1);end    d = d.^0.5;