Insert value at a specific spot in matlab vector or matrix

Question

I\'m trying to insert a value to a vector at specific indices, specified in another vector, and then displacing the other values accordingly.

E.g.

Answer 1

Here is a general function. The idea is the same as @Mark said:

   function arrOut = insertAt(arr,val,index)
      assert( index<= numel(arr)+1);
      assert( index>=1);
      if index == numel(arr)+1
          arrOut = [arr val];
      else
          arrOut = [arr(1:index-1) val arr(index:end)];
      end
   end

I have never heard of a built-in function for this.