Oct 12, 2012 · To return the shortest matching substring, use sorted(s1, key=len)[0]. Full example: print sorted(s1, key=len)[0] print min(s1, key=len) # as suggested by Nick Presta. This works by sorting the list returned by findall by length, then returning the first item in the sorted list.

Jul 23, 2022 · Given string str consisting of only lowercase English alphabets, the task is to find the substring of the smallest length which contains all the vowels. If no such substring is found, print -1. Example: Input: str = “babeivoucu” Output: 7 Explanation: Smallest substring which contains each vowel atleast once is “abeivou” of length 7.

Nov 5, 2021 · def find_substr(s, k): substrings = [s[i:i+k] for i in range(len(s) - k + 1)] # list of substrings # vowels = [sum(c in 'aeiou' for c in s) for s in substrings] # print(vowels) # [2, 2, 3] return max(substrings, key=lambda s: sum(c in 'aeiou' for …

Jan 15, 2025 · Let’s explore various methods to extract substrings of length k from a given string in Python. List comprehension is the most efficient and concise way to extract substrings. It iterates through the string and collects all substrings of length k in a single line.

Mar 8, 2024 · In this code, the optimized_brute_force function iterates over the lengths of potential substrings starting from 1 and ending at the length of the input string s. For each length, we check all substrings of that size and use the built-in all() function to determine if all characters from the query string t are present in the current substring.

Nov 20, 2020 · Given a string s, I want to find the substring of length k which contains the maximum number of vowels among the list ["a", "e", "i", "o", "u"] The user gets to input the string s and its length k.

Count Vowel Substrings of a String - A substring is a contiguous (non-empty) sequence of characters within a string. A vowel substring is a substring that only consists of vowels ('a', 'e', 'i', 'o', and 'u') and has all five vowels present in it.

Jul 31, 2023 · To quickly determine the size of the shortest substring that contains every vowel in each string, use the sliding window approach. The method makes use of two pointers, commonly known as "left" and "right," to produce a sliding window that slides down the string.

INTEGER k # def findSubstring (s, k): vowels = ["a", "e", "i", "o", "u"] cur = best = sum ( [c in vowels for c in s [:k]]) ans = 0 for i in range (k, len (s)): cur += s [i] in vowels cur -= s [i - k] in vowels if cur > best: best = cur ans = i - k + 1 if best > 0: return s …

Aug 9, 2024 · Substring a string in Python. Using String Slicing; Using str.split() function; Using Regular Expressions; Using String Slicing to get the Substring. Consider the string " GeeksForGeeks is best!". Let's perform various string-slicing operations to extract various substrings . Extracting a Substring from the Beginning