Program that reads strings typed by user until nothing entered then prints strings in reverse order-CodePudding

I am trying to write a program that allows a user to continue to type out strings until an empty string is entered. Then the program sorts through the strings and prints the string in depending order ( lexicographically ).

The string output should look something like this.

enter a string: the tree is nice and brown
output: tree the nice is brown and

I have tried to implement this code for myself however I have ran into a problem where it prints the code multiple times. see bellow code.

Enter string: the tree is nice and brown
Output:  tree Output:  the Output:  nice Output:  is Output:  brown Output:  and Enter string:

how can I fix my code to remove the Output: that continues to be printed after each word in the string. And also make the final enter new string print on a new line. See bellow my final code.

s=input("Enter string: ")

while s!="":
    a=s.lower()
    b=a.split()
    b.sort(reverse=True)
    for i in b:
        answer=""
        answer =i
        print("Output: ", answer, end=" ")
    s=input("Enter string: ")

CodePudding user response：

while s := input('Enter string: '):
    a=s.lower()
    b=a.split()
    b.sort(reverse=True)
    output = ("OUTPUT: \n"   " ".join(b)
    print(output)

CodePudding user response：

You could break this down to just two lines. Not necessarily very instructive but just for fun:

while s := input('Enter string: '):
    print('Output:\n' ' '.join(sorted(s.lower().split(), reverse=True)))

CodePudding user response：

You should probably collect all data first and the perform the operations you want on said data.

Left some comments on your code:

s=input("Enter string: ")

while s!="":
    a=s.lower()
    b=a.split()
    b.sort(reverse=True)
    for i in b:               #Every time you input something new you also enter this for-loop
        answer=""             #This resets the variable every for-loop
        answer =i             #This tries to concatenate a string i to the variable answer but since you reset the variable every loop you will never get anything else than i here
        print("Output: ", answer, end=" ")  #Does this run?
    s=input("Enter string: ")

"Correct" code:

s=input("Enter string: ")
input_words=[s]
while s!="":
    s=input("Enter string: ")
    input_words.append(s)

# All the input data is now gathered into a single variable "input_words" that you can manipulate as you want.
wordlist=[]
for words in input_words:
    a=words.lower()
    b=a.split()
    for i in b:
        wordlist.append(i)

# After splitting and making all strings lowercase sort the new list.
wordlist.sort(reverse=True)

# Concatenate the list into a new string
answer=""
for i in wordlist:
    answer =" " i

#Print
print("Output:" answer "\n")