In this article, we are going to unravel an interesting problem from the domain of string manipulation: "Rearrange a string to maximize the minimum distance between any pair of vowels". This problem challenges us to manipulate the arrangement of characters in a string to ensure the maximum possible minimum distance between any two vowel characters. We'll discuss the problem in detail, providing the various programs. Understanding the Problem Statement Given a string, the task is to rearrange the characters in the string in such a way that the minimum distance between any pair of vowels is maximized. In other words, ... Read More

In this article, we will be discussing how to construct a Deterministic Finite Automaton (DFA) for the Regular Expression C(A + B)+. We'll start by understanding the problem and the theory behind it, then we'll dive into the implementation and conclude with a relevant example to demonstrate its use. Understanding the Problem Statement A Deterministic Finite Automaton (DFA) is a theoretical model of computation used in automata theory, a branch of theoretical computer science. It's one of the simplest types of automata and an essential concept in the study of compilers and parsers. The task here is to program a ... Read More

In this article, we will be exploring an interesting problem related to expressions and grammar. The problem statement is "Print a sorted list of words represented by the expression under the given grammar". This problem offers a great opportunity to brush up your knowledge on parsing expressions, handling strings, and sorting algorithms. Problem Statement Given a string expression where each character represents a lowercase English letter and the '|' character represents an OR operation, the task is to print a sorted list of all possible words represented by the expression. Solution Approach Our approach to solve this problem is by ... Read More

In this article, we'll delve into a fascinating problem that involves numbers and permutations: "Permutation of a number whose sum with the original number is equal to another given number". This problem offers a unique intersection of number theory and combinatorics, making it a compelling challenge to tackle. To clarify, given an original number and a target number, we need to find a permutation of the original number such that, when we add the original number and its permutation, we get the target number. Understanding the Problem In essence, this problem combines the concepts of number permutation, summation, and equality ... Read More

In this article, we will explore a common string manipulation problem: moving all digits to the beginning of a given string. This task is often seen in data cleaning or preprocessing, where we need to standardize or reformat strings in a certain way. A widely-used programming language celebrated for its efficiency and control. Problem Statement Given a string that contains alphanumeric characters, our task is to move all the digits present in the string to the beginning, while keeping the order of the rest of the characters the same. Solution Approach Our approach to solving this problem involves two key ... Read More

When working with strings, sometimes we need to modify them in specific ways to meet certain requirements. One such requirement is to modify a string by increasing each character by its distance from the end of the word. In this article, we will discuss an approach to solving this problem. Problem Statement Given a string S, modify the string by increasing each character by its distance from the end of the word. Approach To solve this problem, we can follow the following steps − Tokenize the given string S into individual words. Iterate over each word and for each ... Read More

In this article, we'll discuss an intriguing problem in string manipulation - "Minimum swaps required between two strings to make one string strictly greater than the other". We'll understand the problem, detail a strategy to solve it, implement it in C++, and clarify the concept with a relevant example. Understanding the Problem Statement Given two strings of equal length, our goal is to determine the minimum number of character swaps required to make one string strictly greater than the other. The characters are swapped between the two strings, and each swap operation involves exactly one character from each string. The ... Read More

Palindromes are sequences of characters that read the same forwards and backwards. In computer science and programming, palindromes are a common subject for string manipulation problems. In this article, we will explore the problem of finding the minimum size substring that must be removed from a given string to make it palindromic. We will include an example to illustrate the test case. Problem Statement Given a string 's' of length 'n', we need to find the minimum size of the substring that should be removed to make the remaining string palindromic. Algorithm Create a function isPalindrome that takes a ... Read More

In this article, we will delve into an interesting string manipulation problem: "Minimum replacements such that no palindromic substring of length exceeding 1 is present in the given string". This problem challenges us to calculate the minimum number of character replacements required to ensure that a given string contains no palindromic substrings of length more than 1. We will explain the problem and clarify the concept with an example. Understanding the Problem Statement A string is given to us, and our task is to determine the minimum number of character replacements needed to ensure that the string does not contain ... Read More

In this article, we will explore an intriguing computational problem - "Minimum number of digits required to be removed to make a number divisible by 4". This problem is a common one in coding contests and algorithm-based interviews and offers excellent practice for enhancing your problem-solving skills. First, let's understand the problem statement: We have a number, and our task is to remove the minimum number of digits such that the remaining number is divisible by 4. Conceptual Understanding The problem lies in the realm of number theory. One key fact to understand is that a number is divisible by ... Read More