# Task 9: Replace the space character Write a Python program to replace the space character that occurs after a word ending with a or r with a newline character. Sample data : 'area not a a2\_b roar took 22' Sample output : area not a a2\_b roar took 22

Here's the Python code to achieve the desired output:

data = 'area not a a2_b roar took 22'
output = ''
i = 0
while i < len(data):
    if data[i] == ' ' and (i > 0 and (data[i-1] == 'a' or data[i-1] == 'r')):
        output += '\n'
    else:
        output += data[i]
    i += 1

print(output)

Output:

area   not a   a2_b roar   took 22

相关问题

Write a program that asks a string to the user, and counts the number of time each character occurs in the string，output is a set

Sure, I can help you with that! Here's a Python program that does what you're asking for:

string = input("Please enter a string: ")
count = {}

for char in string:
    if char in count:
        count[char] += 1
    else:
        count[char] = 1

print("Character count:")
for char, num in count.items():
    print(char, num)

This program prompts the user to enter a string, then creates a dictionary called `count` to keep track of how many times each character appears in the string. It loops through each character in the string, and if the character is already in the `count` dictionary, it increments the count by 1. If the character is not yet in the dictionary, it adds it with a count of 1. Finally, it prints out the character count for each character in the string.

live serverFailed to load resource: the server responded with a status of 404 (Not Found)

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