Radix sort

What is radix sort?

def countsort(arr,exp):

    

    n=len(arr)

    op=[0]*n

    count=[0]*10

    for i in range(0,n):

        index=int(arr[i]/exp)

        count[(index)%10]+=1

    for i in range(1,10): 

        count[i] += count[i-1] 

    i=n-1

    while i>=0:

        index=int(arr[i]/exp)

        op[count[(index)%10]-1]=arr[i]

        count[(index)%10] -= 1

        i-=1

    for i in range(0,len(arr)): 

        arr[i] = op[i]   

 #   print(arr)

def write(arr):

     for i in arr:

         print(i,end='\t')

     print("\n")

def radix(arr):

    exp=1

    max1=max(arr)

    

    while(int(max1/exp)) > 0:

        countsort(arr,exp)

        #print(int(max1/exp))

        write(arr)

        exp *= 10

        

arr = list(int(x) for x in input("Enter Elements separated by ',' ").split(","))

print("original array")

radix(arr)