vowel-consonant

79 posts

Python Program to find if a character is vowel or Consonant

Last Updated: 23 July 2025

Given a character, check if it is vowel or consonant. Vowels are 'a', 'e', 'i', 'o' and 'u'. All other characters ('b', 'c', 'd', 'f' ....) are consonants.Examples:Input :...read more

Python

Python Programs

vowel-consonant

Count the number of vowels and consonants in a Linked List

Last Updated: 11 February 2022

Given a linked list containing lowercase English alphabets, the task is to count the number of consonants and vowels present in the linked list.Example:Input: Linked List:...read more

Find unique substrings consisting of only vowels from given String

Last Updated: 05 April 2022

Given string str of size N consisting of uppercase and lowercase English letters. The task is to find all unique substrings containing only vowels.Examples:Input: str = "G...read more

Longest substring containing exactly K vowels

Last Updated: 26 April 2023

Given string str containing both uppercase and lowercase letters, and an integer K. The task is to find the longest substring containing exactly K vowels (maybe repetitive...read more

DSA

vowel-consonant

substring

Count the number of vowels occurring in all the substrings of given string | Set 2

Last Updated: 23 July 2025

Given a string str[] of length N of lowercase characters containing 0 or more vowels, the task is to find the count of vowels that occurred in all the substrings of the gi...read more

Minimize changes to make all characters equal by changing vowel to consonant and vice versa

Last Updated: 23 July 2025

Given a string str[] of lower-case characters, the task is to make all characters of the string equal in the minimum number of operations such that in each operation eithe...read more

Length of the longest substring that does not contain any vowel

Last Updated: 23 July 2025

Given a string S consisting of N lowercase characters, the task is to find the length of the longest substring that does not contain any vowel.Examples:Input: S = “geeksfo...read more

Count Words with At Most K Consecutive Vowels

Last Updated: 10 August 2026

Given two integers n and k, count the number of distinct words of length n that can be formed using lowercase English letters such that no sequence of consecutive vowels h...read more

DSA

vowel-consonant

Length of the longest substring consisting only of vowels in non-increasing order

Last Updated: 23 July 2025

Given a string S of size N consisting of lowercase alphabets, the task is to print the length of the longest substring consisting only of vowels sorted in non-increasing o...read more

Length of the longest substring that contains even number of vowels

Last Updated: 23 July 2025

Given a string S consisting of N lowercase characters, the task is to find the length of the longest substring consisting of each vowel an even number of timesExamples:Inp...read more

DSA

vowel-consonant

frequency-counting

Sort a string without altering the position of vowels

Last Updated: 23 July 2025

Given a string S of size N, the task is to sort the string without changing the position of vowels.Examples:Input: S = "geeksforgeeks"Output: feeggkokreessExplanation:The ...read more

Count anagrams having first character as a consonant and no pair of consonants or vowels placed adjacently

Last Updated: 23 July 2025

Given a string S of length N, the task is to count the number of anagrams of S whose first character is a consonant and no pair of consonants or vowels are adjacent to eac...read more

Modify string by rearranging vowels in alphabetical order at their respective indices

Last Updated: 23 July 2025

Given a string S of length N, the task is to sort the vowels of the given string in alphabetical order at place them accordingly in their respective indices.Examples:Input...read more

Check if a string can be split into two substrings with equal number of vowels

Last Updated: 23 July 2025

Given a string S, the task is to check if the string can be split into two substrings such that the number of vowels in both of them are equal. If found to be true, then p...read more

Rearrange a string to maximize the minimum distance between any pair of vowels

Last Updated: 23 July 2025

Given a string str, the task is to rearrange the characters of the given string such that the minimum distance between any pair of vowels is maximum possible.Examples:Inpu...read more

1 2 3 4 5 6