Using loops, how do I combine 2 arrays of possibly different orientations (1 could be vertical and 1 horizontal) into 1 array WITHOUT using any of MATLAB's built in concatenation functions like horzcat, etc

This is some extra practice to prepare for my exam. They want us to use loops and I cannot figure out how to do it. So finalArr is the combined array of consisting of first arr1 and then followed by arr2.

for example arr1 = [4;5;6;7;24;5] and arr2 = [1,3,2]

so I guess finalArr = [4,5,6,7,24,5,1,3,2]

The way I did it without using loops:

function [finalArr] = concatArr(arr1, arr2)
    [r1,c1] = size(arr1)
    lenArr1 = max(r1,c1)
    [r2,c2] = size(arr2)
    lenArr2 = max(r2,c2)
    total = lenArr1+lenArr2
    start = lenArr1+1

      finalArr = zeros(1, total)
      finalArr(1:c1) = arr1
      finalArr(start:total) = arr2
   end

But I do not understand how to use loops to do this...

What I have so far using a for loop(I know it is not right):

function [arr12] = concatArr(arr1, arr2)
    [r1,c1] = size(arr1)
    lenArr1 = max(r1,c1)
    [r2,c2] = size(arr2)
    lenArr2 = max(r2,c2)

      total = lenArr1+lenArr2
      start = lenArr1+1

      arr12 = zeros(1,total)

      for i = 1:r1
          for j = 1:c1
                  arr12(i,j) = arr1(i,j)
          end
  end

Any help is much appreciated. I can tell I am missing some fundamental concepts but I need some guidance thanks.

Answer 1

[Ngoc Thanh Hung Bui]

%% Simple answer

arr1 = [4;5;6;7;24;5];

arr2 = [1,3,2];

finalArr = [arr1', arr2]

%% Using loop:

finalArr = zeros(1, length(arr1) + length(arr2));

for i = 1:length(arr1)

finalArr(i) = arr1(i);

end

for i = length(arr1):(length(arr1) + length(arr2))

finalArr(i) = arr2(i-length(arr1));

end

[rayray]

But you don't necessarily know the orientations of the 2 input arrays. I just provided an example but it can be that you have 2 horizontally oriented arrays or 2 vertical arrays or a mixture of both

[Ngoc Thanh Hung Bui]

the answer using for loop is not related to the orientations of 2 input, it works for any case you mentioned, did you try it?

for the simple answer you should identify the orientations first, for examlple:

if size(arr1,1)>1 then it is vertical

if size(arr1,2)>1 then it is horizontal