ctype.h(<cctype>) library in C/C++ with Examples
As string.h header file contains inbuilt functions to handle Strings in C/C++, the ctype.h/<cctype> contains inbuilt functions to handle characters in C/C++ respectively. Characters are… Read More »
Category Archives: Strings
Check if given string contains all the digits
Given a string str consisting of alphanumeric characters, the task is to check whether the string contains all the digits from 1 to 9. Examples:… Read More »
Longest subsequence having difference atmost K
Given a string S of length N and an integer K, the task is to find the length of longest sub-sequence such that the difference… Read More »
Reduce the number to minimum multiple of 4 after removing the digits
Given an integer N, the task is to reduce the number to a smallest positive integer X after removing some of the digits (possibly none)… Read More »
Check whether the given string is Palindrome using Stack
Given a string str, the task is to find whether the given string is a palindrome or not using stack. Examples: Input: str = “geeksforgeeks”… Read More »
Generate Binary Strings of length N using Branch and Bound
The task is to generate a binary string of length N using branch and bound technique Examples: Input: N = 3 Output: 000 001 010… Read More »
Check if two strings can be made equal by swapping one character among each other
Given two strings A and B of length N, the task is to check whether the two strings can be made equal by swapping any… Read More »
Minimum operations required to make the string satisfy the given condition
Given a string str, the task is to make the string start and end at the same character with the minimum number of given operations.… Read More »
Find the most valued alphabet in the String
Given a string str, the task is to find the maximum valued alphabet in str. The value of a particular alphabet is defined as the… Read More »
Find the last two missing digits of the given phone number
Given eight digits of a phone number as an integer N, the task is to find the missing last two digits and print the complete… Read More »
Split the binary string into substrings with equal number of 0s and 1s
Given a binary string str of length N, the task is to find the maximum count of substrings str can be divided into such that… Read More »
Check whether all the substrings have number of vowels atleast as that of consonants
Given a string str, the task is to check whether all the substrings of length ≥ 2 have the number of vowels at least as… Read More »
Find the Mid-Alphabet for each index of the given Pair of Strings
Given two same length strings str1 and str2 consisting of lowercase English alphabets, the task is to find the Mid-Alphabet for each index of the… Read More »
Index of character depending on frequency count in string
Given a string str containing only lowercase characters, the task is to answer Q queries of the following type: 1 C X: Find the largest… Read More »
Queries to find the count of vowels in the substrings of the given string
Given a string str of length N and Q queries where every query consists of two integers L and R. For every query, the task… Read More »
