K most occurring strings
Given an array arr[] of N strings and an integer K, the task is to print K strings which occurred the most number of times… Read More »
Category Archives: Strings
Replace all occurrences of character X with character Y in given string
Given a string str and two characters X and Y, the task is to write a recursive function to replace all occurrences of character X… Read More »
How to store a very large number of more than 100 digits in C++
Given an integer N in form of string str consisting of more than 100 digits, the task is to store the value for performing an… Read More »
Java program to print all duplicate characters in a string
Given a string, the task is to write Java program to print all the duplicate characters with their frequency Example: Input: str = “geeksforgeeks” Output:… Read More »
Construct a string that has exactly K subsequences from given string
Given a string str and an integer K, the task is to find a string S such that it has exactly K subsequences of given… Read More »
Check if a large number is divisible by a number which is a power of 2
Given a large number in the form of a string str and a number K, the task is to check if the number formed by… Read More »
Remove leading zeros from a Number given as a string
Given a numeric string str, the task is to remove all the leading zeros from a given string. If the string containing only zeros, then… Read More »
Minimum cost to convert given string to consist of only vowels
Given string str of lower case alphabets, the task is to find the minimum cost to change the input string in a string that contains… Read More »
Check if a string contains only alphabets in Java
Given a string, the task is to write a Java program to check whether the string contains only alphabets or not. If so, then print… Read More »
How to remove all non-alphanumeric characters from a string in Java
Given a string str, the task is to remove all non-alphanumeric characters from it and print the modified it. Examples: Input: @!Geeks-for’Geeks,123 Output: GeeksforGeeks123 Explanation: at symbol(@), exclamation… Read More »
Longest substring that starts with X and ends with Y
Given a string str, two characters X and Y. The task is to find the length of the longest substring that starts with X and… Read More »
Print all possible palindromic string formed using any pair of given strings
Given an array of strings arr[] containing N words, the task is to print all possible palindromic string by combining any two strings from the… Read More »
Check if a string can be split into two strings with same number of K-frequent characters
Given a string S and an integer K, the task is to check if it is possible to distribute these characters into two strings such… Read More »
Count of substrings having all distinct characters
Given a string str consisting of lowercase alphabets, the task is to find the number of possible substrings (not necessarily distinct) that consists of distinct… Read More »
Calculate weight of parenthesis based on the given conditions
Given a valid parenthesis string S, the task is to find the weight of parenthesis based on the following conditions: Weight of “( )” is… Read More »
