#loop_strings.py
#count, sum of lengths, longest, shortest, first, last, in order, most vowels

num_words = 0
sum_lengths = 0
in_order = "yes"  #assume the words are entered in order

#"priming read" to get first string
word = input("Enter a word (Enter to quit): ").lower()  #lowercase all letters
longest_len = shortest_len = len(word)
longest_word = shortest_word = word   #the actual longest/shortest string
first = last = word    #in alphabetical order
max_vowels = 0
max_vowel_word = word
previous = word  #remember the previously inputted string

while word != "":   #loop until empty string
    word_length = len(word)
    sum_lengths += word_length 
    num_words += 1    

    if word_length > longest_len:  #if this word is the longest so far,
        longest_len = word_length  #remember its length
        longest_word = word        #and the word itself

    if word_length < shortest_len:
        shortest_len = word_length 
        shortest_word = word

    if word < first: #this word is alphabetically before the alphabetically-first so far
        first = word #so it is now the alphabetically-first so far

    if word > last:
        last = word

    #count the number of vowels this word has
    vowels = 0
    for c in word:   #each character in the word 
        if c in ['a','e','i','o','u']:
            vowels += 1
    if vowels > max_vowels:  # a new max # vowels word
        max_vowels = vowels
        max_vowel_word = word
        
    if word < previous: #this word is alphabetically before the previously entered word
        in_order = "no"   #thus entire sequence of words is not in alphabetical order

    previous = word  #this word will be previous for next word

    #get next word:
    word = input("Enter a word (Enter to quit): ").lower()

if num_words > 0:
    print("#words=",num_words, 
          "\nTotal number of letters=", sum_lengths,
          "\nAverage letters per word=", sum_lengths/num_words,
          "\nLongest word length=", longest_len, "  ", longest_word,
          "\nShortest word length=", shortest_len, "  ", shortest_word,
          "\nFirst word in alphabetical order=", first,
          "\nLast word in alphabetical order=", last,
          "\nMost #vowels=", max_vowels, "  ", max_vowel_word,
          "\nWords entered in order: ", in_order)
else:
    print("No words entered")