def quickshort(a,start,end):
if start<end:
pindex = partition(a,start,end)
quickshort(a,start,pindex-1)
quickshort(a,pindex+1,end)
def partition(a,start,end):
middle = int(end/2)
pivot = a[middle]
pindex = start
for i in range(start,middle):
if a[i]>=pivot:
a[i],a[pindex]=a[pindex],a[i]
pindex = pindex + 1
a[pindex],a[middle]=a[middle],a[pindex]
print(a)
return pindex
a = [68,90,78,44,34,20,100,56,34,2]
quickshort(a,0,len(a)-1)