Given a string of lowercase letters. Find minimum characters to be inserted in the string so that it can become palindrome. We can change the positions of characters in the string....

Given a string str of small alphabetic characters other than this we will be given many substrings of this string in form of index tuples. We need to find out the count of the palindromic substrings in given substring range....

Given a binary string, count minimum number of subsequences to be removed to make it an empty string....

Prerequisites: Finite AutomataGiven a string str consisting of characters a, b and c, check if the number of occurrences of any character in the string is a multiple of 3 or not....

Given a string s we have to find the length of the longest substring of s which contain exactly K distinct vowels....

Given an array, arr[] consisting of N strings where each character of the string is lower case English alphabet, the task is to store and print the occurrence of every distinct character in every string....

Given binary string str of length N​​​​, the task is to find the minimum number of characters required to be deleted from the given binary string to make a substring of 0s followed by a substring of 1s....

Given a string str, the task is to find the maximum count of common non-repeating characters that can be obtained by partitioning the given string into two non-empty substrings....

Given two strings str1 and str2, where str2 is a subsequence of str1, the task is to find the length of the longest substring of str1 which when removed, makes the strings str2 and str1 equal....

Given an array of n string containing lowercase letters. Find the size of largest subset of string which are anagram of each others. An anagram of a string is another string that contains same characters, only the order of characters can be different. For example, “abcd” and “dabc” are anagram of each other....

Converting String to ArrayList means each character of the string is added as a separator character element in the ArrayList....

Given an expression string exp, write a program to examine whether the pairs and the orders of “{“, “}”, “(“, “)”, “[“, “]” are correct in exp....