#130 fixed radix sort for python 3

Author: KuLi

Diff for: sorts/radix_sort.py

@@ -2,26 +2,26 @@ def radixsort(lst):
   RADIX = 10
   maxLength = False
   tmp , placement = -1, 1
- 
+
   while not maxLength:
     maxLength = True
     # declare and initialize buckets
     buckets = [list() for _ in range( RADIX )]
- 
+
     # split lst between lists
     for  i in lst:
-      tmp = i / placement
+      tmp = i // placement
       buckets[tmp % RADIX].append( i )
       if maxLength and tmp > 0:
         maxLength = False
- 
+
     # empty lists into lst array
     a = 0
     for b in range( RADIX ):
       buck = buckets[b]
       for i in buck:
         lst[a] = i
         a += 1
- 
+
     # move to next
     placement *= RADIX