Update radix_sort.py

This will fix the error in the list index showing as float

Author: satanb4

sorts/radix_sort.py

@@ -9,9 +9,9 @@ def radixsort(lst):
     buckets = [list() for _ in range( RADIX )]
 
     # split lst between lists
-    for  i in lst:
-      tmp = i / placement
-      buckets[tmp % RADIX].append( i )
+    for i in lst:
+      tmp = int((i / placement) % RADIX)
+      buckets[tmp].append(i)
       if maxLength and tmp > 0:
         maxLength = False