title: Convert 1 dimensonal list to 3 dimensional list
body: <p>I have a one dimensional list. I have to convert it to three dimensional list. How can i manage it ?</p>
  
  <p>These are my lists.</p>
  
  <pre><code> this.galleryImages = [
              {
                  small: 'https://res.cloudinary.com/tasit-com/image/upload/c_thumb,w_640,h_480,e_sharpen:120/ccd97b3bb468f62162e1ce7557f25a06.jpg',
                  medium: 'https://res.cloudinary.com/tasit-com/image/upload/c_thumb,w_640,h_480,e_sharpen:120/ccd97b3bb468f62162e1ce7557f25a06.jpg',
                  big: 'https://imganuncios.mitula.net/renault_clio_2017_motorin_1_94_vade_orani_40_pe_i_n_48ay_taksi_t_duzgun_ti_caret_bunyesi_nde_3720113557242259227.jpg',
  
              },
              {
                  small: 'https://imganuncios.mitula.net/renault_clio_2017_motorin_1_94_vade_orani_40_pe_i_n_48ay_taksi_t_duzgun_ti_caret_bunyesi_nde_3720113557242259227.jpg',
                  medium: 'https://imganuncios.mitula.net/renault_clio_2017_motorin_1_94_vade_orani_40_pe_i_n_48ay_taksi_t_duzgun_ti_caret_bunyesi_nde_3720113557242259227.jpg',
                  big: 'https://imganuncios.mitula.net/renault_clio_2017_motorin_1_94_vade_orani_40_pe_i_n_48ay_taksi_t_duzgun_ti_caret_bunyesi_nde_3720113557242259227.jpg'
              },
              {
  
                  small: 'https://www.ihaleden.com/uploads/media/5c6f93d30a4a4.png',
                  medium: 'https://www.ihaleden.com/uploads/media/5c6f93d30a4a4.png',
                  big: 'https://www.ihaleden.com/uploads/media/5c6f93d30a4a4.png'
              }
          ]
  
  </code></pre>
  
  <p>My one dimensional list is selectedFilesList. I want to convert this list to 3 dimensional list and equal with the other list.</p>