updated countingSort4.py  devised a considerably better solution after looking at what others had done, specifically this solution:  https://codepair.hackerrank.com/paper/Am3fVX2r?b=eyJyb2xlIjoiY2FuZGlkYXRlIiwibmFtZSI6ImpsbWFya3MiLCJlbWFpbCI6ImplcmVtaWFoQGpsbWFya3Mub3JnIn0%3D