Re.findall() & Re.finditer() in Python HackerRank Solution

Hello coders, In this post, you will learn how to solve Re.findall() & Re.finditer() in Python HackerRank Solution. This problem is a part of the Python Hacker Rank series.

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Re.findall() & Re.finditer() in Python - HackerRank Solution
Re.findall() & Re.finditer() in Python – HackerRank Solution

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Re.findall() & Re.finditer() in Python HackerRank Solution

problem

re.findall()
The expression re.findall() returns all the non-overlapping matches of patterns in a string as a list of strings.
Code :

>>> import re
>>> re.findall(r'\w','http://www.hackerrank.com/')
['h', 't', 't', 'p', 'w', 'w', 'w', 'h', 'a', 'c', 'k', 'e', 'r', 'r', 'a', 'n', 'k', 'c', 'o', 'm']

re.finditer()
The expression re.finditer() returns an iterator yielding MatchObject instances over all non-overlapping matches for the re pattern in the string.
Code :

>>> import re
>>> re.finditer(r'\w','http://www.hackerrank.com/')
<callable-iterator object at 0x0266C790>
>>> map(lambda x: x.group(),re.finditer(r'\w','http://www.hackerrank.com/'))
['h', 't', 't', 'p', 'w', 'w', 'w', 'h', 'a', 'c', 'k', 'e', 'r', 'r', 'a', 'n', 'k', 'c', 'o', 'm']

Task :

You are given a string S. It consists of alphanumeric characters, spaces and symbols(+,-).
Your task is to find all the substrings of S that contains 2 or more vowels.
Also, these substrings must lie in between 2 consonants and should contain vowels only.
Note :
Vowels are defined as: AEIOU and aeiou.
Consonants are defined as: QWRTYPSDFGHJKLZXCVBNM and qwrtypsdfghjklzxcvbnm.


Input Format :

A single line of input containing string S.

Constraints :

  • 0 < len(s)<100

Output Format :

Print the matched substrings in their order of occurrence on separate lines.
If no match is found, print -1.


Sample Input :

>>> import re
>>> re.finditer(r'\w','http://www.hackerrank.com/')
<callable-iterator object at 0x0266C790>
>>> map(lambda x: x.group(),re.finditer(r'\w','http://www.hackerrank.com/'))
['h', 't', 't', 'p', 'w', 'w', 'w', 'h', 'a', 'c', 'k', 'e', 'r', 'r', 'a', 'n', 'k', 'c', 'o', 'm']

Sample Output :

ee
Ioo
Oeo
eeeee

Explanation :

ee is located between consonant d and f.
Ioo is located between consonant k and m.
Oeo is located between consonant p and r.
eeeee is located between consonant t and t.


Re.findall() & Re.finditer() in Python HackerRank Solution

import re
Storage = re.findall(r'(?<=[qwrtypsdfghjklzxcvbnm])([aeiou]{2,})(?=[qwrtypsdfghjklzxcvbnm])', input().strip(), re.IGNORECASE)
if Storage:
    for i in Storage:
        print(i)
else:
    print(-1)

Disclaimer: The above Problem (Re.findall() & Re.finditer() in Python – HackerRank Solution ) is generated by Hackerrank but the Solution is Provided by Chase2Learn. This tutorial is only for Educational and Learning purposes. Authority if any of the queries regarding this post or website fill the following contact form thank you.

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