Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
To achieve this, you can use the `re` module in Python, which provides regex matching operations. The following function definition shows how you can use a regular expression to find any word that is repeated 5 times or more in a given string. It then returns that word if found, or an empty string otherwise.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | import re def match(text): # Regular expression to find any word repeated 5 times or more # \b is a word boundary, \w+ matches any word, and {5,} specifies 5 or more occurrences # The (?i) flag makes the match case-insensitive # The \s* allows for zero or more spaces between the repeated words pattern = r'(?i)\b(\w+)(?:\s*\1){4,}\b' # Search for the pattern in the text result = re.search(pattern, text) # If a match is found, return the matched word if result: return result.group(1) else: # If no match is found, return an empty string return '' # Example usage text = "hello hello Hello hello hello hello world world world" print(match(text)) # Output should be 'hello' because it's repeated 5 or more times (case-insensitive) |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | import re def match(text): # Regular expression to find any word repeated 5 times or more # \b is a word boundary, \w+ matches any word, and {5,} specifies 5 or more occurrences # The (?i) flag makes the match case-insensitive # The \s* allows for zero or more spaces between the repeated words pattern = r'(?i)\b(\w+)(?:\s*\1){4,}\b' # Search for the pattern in the text result = re.search(pattern, text) # If a match is found, return the matched word if result: return result.group(1) else: # If no match is found, return an empty string return '' # Example usage text = "hello hello Hello hello hello hello world world world" print(match(text)) # Output should be 'hello' because it's repeated 5 or more times (case-insensitive) |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | import re def match(text): # Regular expression to find any word repeated 5 times or more # \b is a word boundary, \w+ matches any word, and {5,} specifies 5 or more occurrences # The (?i) flag makes the match case-insensitive # The \s* allows for zero or more spaces between the repeated words pattern = r'(?i)\b(\w+)(?:\s*\1){4,}\b' # Search for the pattern in the text result = re.search(pattern, text) # If a match is found, return the matched word if result: return result.group(1) else: # If no match is found, return an empty string return '' # Example usage text = "hello hello Hello hello hello hello world world world" print(match(text)) # Output should be 'hello' because it's repeated 5 or more times (case-insensitive) answer = match('hi hi hi hi hi') expected = "hi" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hi hi hi hi') expected = "" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hello this is is is is is a test') expected = "is" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
hello
All tests passed
Testing if the previous output contains the string All tests passed
: True
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
To accomplish the task of finding a word that is repeated 5 times or more in a given text using Python, we can leverage the `re` module, which provides support for regular expressions. The pattern to match a word repeated 5 times or more involves capturing a word and then checking if this exact word occurs 4 more times (totaling 5) anywhere in the text. Here's how you could implement the `match` function:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | import re def match(text): # Regular expression to find a word (captured as a group) followed by that exact word 4 more times # \b is a word boundary, \w+ captures a word, and \s* allows for any number of spaces between the words # The (?i) at the start makes the search case-insensitive pattern = r'(?i)\b(\w+)\b(?:\s*\1\b){4,}' # Search for the pattern in the given text match = re.search(pattern, text) # If a match is found, return the matched word, else return an empty string return match.group(1) if match else '' # Example usage: text = "This is a test test test test test of the regex function." print(match(text)) # Output: test text = "Unique words here." print(match(text)) # Output: (empty string) |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | import re def match(text): # Regular expression to find a word (captured as a group) followed by that exact word 4 more times # \b is a word boundary, \w+ captures a word, and \s* allows for any number of spaces between the words # The (?i) at the start makes the search case-insensitive pattern = r'(?i)\b(\w+)\b(?:\s*\1\b){4,}' # Search for the pattern in the given text match = re.search(pattern, text) # If a match is found, return the matched word, else return an empty string return match.group(1) if match else '' # Example usage: text = "This is a test test test test test of the regex function." print(match(text)) # Output: test text = "Unique words here." print(match(text)) # Output: (empty string) |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | import re def match(text): # Regular expression to find a word (captured as a group) followed by that exact word 4 more times # \b is a word boundary, \w+ captures a word, and \s* allows for any number of spaces between the words # The (?i) at the start makes the search case-insensitive pattern = r'(?i)\b(\w+)\b(?:\s*\1\b){4,}' # Search for the pattern in the given text match = re.search(pattern, text) # If a match is found, return the matched word, else return an empty string return match.group(1) if match else '' # Example usage: text = "This is a test test test test test of the regex function." print(match(text)) # Output: test text = "Unique words here." print(match(text)) # Output: (empty string) answer = match('hi hi hi hi hi') expected = "hi" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hi hi hi hi') expected = "" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hello this is is is is is a test') expected = "is" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
test
All tests passed
Testing if the previous output contains the string All tests passed
: True
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
To achieve this, you can use the Python `re` module, which provides regex matching operations similar to those found in Perl. You can use the `findall()` function to find all non-overlapping matches of the pattern in the string. Here is how you can implement the `match` function:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | import re def match(text): # This regex pattern looks for any word (\w+) repeated with a word boundary in between, # and uses a backreference (\1) to find repetitions of the same word. # {4,} specifies that the pattern should repeat 4 or more times after the first occurrence, # accounting for a total of 5 or more repetitions. pattern = r'\b(\w+)\b(?:\s+\1\b){4,}' # re.IGNORECASE is used to make the search case-insensitive. # re.findall() returns all matches of the pattern in the string as a list of groups. # Each match will have the repeated word captured by the group in the regex. matches = re.findall(pattern, text, re.IGNORECASE) # If there are matches, return the first one. Otherwise, return an empty string. return matches[0] if matches else '' # Example usage: text = "This is a test test test test test to see if the function works works works." print(match(text)) # Output: test |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | import re def match(text): # This regex pattern looks for any word (\w+) repeated with a word boundary in between, # and uses a backreference (\1) to find repetitions of the same word. # {4,} specifies that the pattern should repeat 4 or more times after the first occurrence, # accounting for a total of 5 or more repetitions. pattern = r'\b(\w+)\b(?:\s+\1\b){4,}' # re.IGNORECASE is used to make the search case-insensitive. # re.findall() returns all matches of the pattern in the string as a list of groups. # Each match will have the repeated word captured by the group in the regex. matches = re.findall(pattern, text, re.IGNORECASE) # If there are matches, return the first one. Otherwise, return an empty string. return matches[0] if matches else '' # Example usage: text = "This is a test test test test test to see if the function works works works." print(match(text)) # Output: test |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | import re def match(text): # This regex pattern looks for any word (\w+) repeated with a word boundary in between, # and uses a backreference (\1) to find repetitions of the same word. # {4,} specifies that the pattern should repeat 4 or more times after the first occurrence, # accounting for a total of 5 or more repetitions. pattern = r'\b(\w+)\b(?:\s+\1\b){4,}' # re.IGNORECASE is used to make the search case-insensitive. # re.findall() returns all matches of the pattern in the string as a list of groups. # Each match will have the repeated word captured by the group in the regex. matches = re.findall(pattern, text, re.IGNORECASE) # If there are matches, return the first one. Otherwise, return an empty string. return matches[0] if matches else '' # Example usage: text = "This is a test test test test test to see if the function works works works." print(match(text)) # Output: test answer = match('hi hi hi hi hi') expected = "hi" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hi hi hi hi') expected = "" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hello this is is is is is a test') expected = "is" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
test
All tests passed
Testing if the previous output contains the string All tests passed
: True
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
To achieve this, we can use the Python `re` module, which provides regex matching operations. The regular expression to match any word repeated 5 times or more involves using backreferences and word boundaries. Here is how you can implement the `match` function:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | import re def match(text): # This regex looks for any word boundary (\b), followed by a word (\w+), # followed by a non-capturing group that consists of any amount of whitespace (\s*), # and then a backreference (\1) to the first captured word, # this sequence repeated 4 times to ensure the word appears a total of 5 times. pattern = r'\b(\w+)\b(?:\s*\1){4,}' # Using the re.search() method to find the first occurrence of the pattern result = re.search(pattern, text, re.IGNORECASE) # re.IGNORECASE to make it case-insensitive # If a match is found, return the matched word, otherwise return an empty string if result: return result.group(1) else: return '' # Example usage text = "hello hello hello hello hello world world world" print(match(text)) # Output: hello text = "This is a test with no repetitions" print(match(text)) # Output: (empty string) |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | import re def match(text): # This regex looks for any word boundary (\b), followed by a word (\w+), # followed by a non-capturing group that consists of any amount of whitespace (\s*), # and then a backreference (\1) to the first captured word, # this sequence repeated 4 times to ensure the word appears a total of 5 times. pattern = r'\b(\w+)\b(?:\s*\1){4,}' # Using the re.search() method to find the first occurrence of the pattern result = re.search(pattern, text, re.IGNORECASE) # re.IGNORECASE to make it case-insensitive # If a match is found, return the matched word, otherwise return an empty string if result: return result.group(1) else: return '' # Example usage text = "hello hello hello hello hello world world world" print(match(text)) # Output: hello text = "This is a test with no repetitions" print(match(text)) # Output: (empty string) |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | import re def match(text): # This regex looks for any word boundary (\b), followed by a word (\w+), # followed by a non-capturing group that consists of any amount of whitespace (\s*), # and then a backreference (\1) to the first captured word, # this sequence repeated 4 times to ensure the word appears a total of 5 times. pattern = r'\b(\w+)\b(?:\s*\1){4,}' # Using the re.search() method to find the first occurrence of the pattern result = re.search(pattern, text, re.IGNORECASE) # re.IGNORECASE to make it case-insensitive # If a match is found, return the matched word, otherwise return an empty string if result: return result.group(1) else: return '' # Example usage text = "hello hello hello hello hello world world world" print(match(text)) # Output: hello text = "This is a test with no repetitions" print(match(text)) # Output: (empty string) answer = match('hi hi hi hi hi') expected = "hi" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hi hi hi hi') expected = "" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hello this is is is is is a test') expected = "is" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
hello
All tests passed
Testing if the previous output contains the string All tests passed
: True
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
Write a function called `match` in Python that uses a regex to find any word repeated 5 times or more. Return that word. If no word is repeated 5 times or more, return an empty string.
To write a function that matches any word repeated 5 times or more in Python using regex, you can use the following approach. The regex pattern to match any word repeated 5 times or more involves the use of backreferences and word boundary assertions. Here's how you can implement it:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | import re def match(text): # Regular expression pattern to find any word repeated 5 times or more # \b asserts position at a word boundary # (\w+) matches and captures a word # (?:\s+\1){4,} matches the same word followed by one or more whitespace characters, 4 or more times pattern = r'\b(\w+)(?:\s+\1){4,}\b' # Search the text for the pattern match = re.search(pattern, text) # If a match is found, return the matched word, otherwise return an empty string if match: return match.group(1) else: return '' # Example usage: text = "hello hello hello hello hello this is an example example example" print(match(text)) # Output: hello |
I extracted the following code from that output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | import re def match(text): # Regular expression pattern to find any word repeated 5 times or more # \b asserts position at a word boundary # (\w+) matches and captures a word # (?:\s+\1){4,} matches the same word followed by one or more whitespace characters, 4 or more times pattern = r'\b(\w+)(?:\s+\1){4,}\b' # Search the text for the pattern match = re.search(pattern, text) # If a match is found, return the matched word, otherwise return an empty string if match: return match.group(1) else: return '' # Example usage: text = "hello hello hello hello hello this is an example example example" print(match(text)) # Output: hello |
Running the following program:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | import re def match(text): # Regular expression pattern to find any word repeated 5 times or more # \b asserts position at a word boundary # (\w+) matches and captures a word # (?:\s+\1){4,} matches the same word followed by one or more whitespace characters, 4 or more times pattern = r'\b(\w+)(?:\s+\1){4,}\b' # Search the text for the pattern match = re.search(pattern, text) # If a match is found, return the matched word, otherwise return an empty string if match: return match.group(1) else: return '' # Example usage: text = "hello hello hello hello hello this is an example example example" print(match(text)) # Output: hello answer = match('hi hi hi hi hi') expected = "hi" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hi hi hi hi') expected = "" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' answer = match('hello this is is is is is a test') expected = "is" assert answer == expected, f'Wrong answer; got {answer} instead of {expected}' print('All tests passed') |
hello
All tests passed
Testing if the previous output contains the string All tests passed
: True