count = {}


# swap elements at index i and j or array a
def swap(a, i, j):
    global count
    a[i], a[j] = a[j], a[i]

    count[a[i]] = count[a[i]] + 1
    count[a[j]] = count[a[j]] + 1


# remove pass and implement selection sort
# use the swap function defined above to
# swap two elements of an array. The swap
# function will automatically keep track of
# the number of swap for each item
def selectionSort(a):
    for j in range(len(a)):
        imin = j
        for i in range(j+1, len(a)):
            if a[i] < a[imin]:
                imin = i
        if imin != j:
            swap(a, j, imin)


# get user input
array = input("Enter a list of string to sort separated by commas:\n")
array = [str(x) for x in array.split(",")]

# set up the dictionary to track counts
for x in array:
    count[x] = 0

selectionSort(array)
print("Number of swap for each item:", count)
total = 0
for i in count.keys():
    total = total + count[i]
print("Average number of swap for each item:", (total * 1.0) / len(count.keys()))