calculate the freq of rows

A = [0 0 0 0 0 17 17 19 19 19 17 17 17 17 17];
B=[0 0 0 0 0 22 22 24 24 24 24 24 24 24 24];
C = [A; B]';
% 找出沒有0的列
idxFilterZeros = find(any(bsxfun(@ne, C, zeros(1, size(C, 2))), 2));
C2 = C(idxFilterZeros, :);
% 找出unique的列
[output, idx1, idx2] = unique(C2, 'rows');
% 用unique列的index去算frequencies
uni_idx = sort(unique(idx2));
% 計算unique列的frequencies
count = histc(idx2, uni_idx);
% 找到最大frequency的列
[~, maxIdx] = max(count);
% 叫出有最大frequency的列
out = C2(find(idx2 == uni_idx(maxIdx), 1, 'first'), :);
outIdx = idxFilterZeros(idx1(maxIdx));