Maximizing time by replacing ‘_’ in a given 24-hour format time is a problem that involves calculating the maximum possible time by replacing the missing digits in a given time in a 24-hour format. The task is to find the maximum time possible by replacing the characters ‘’ with any digit. In this tutorial, we will discuss how to solve this problem using the C++ programming language. We will provide a step-by-step explanation of the algorithm used to calculate the maximum possible time, along with the C++ code to implement the algorithm. Additionally, we will include test examples ... Read More

Lexicographically Kth-smallest string having ‘a’ X times and ‘b’ Y times is a problem where we need to find the Kth smallest string that contains X number of ‘a’s and Y number of ‘b’s. The strings are arranged lexicographically which means that the smallest string comes first when we sort all the possible strings. In this tutorial, we will discuss how to solve this problem using C++. We will start by understanding the problem statement in detail, followed by the algorithmic approach. We will then move on to implementing the solution in C++ using dynamic programming. The code ... Read More

Flip the String by either swapping given characters or rotating it horizontally for Q queries is a fascinating problem that involves manipulating a string based on a series of queries. In this tutorial, we delve into this problem and provide a solution using C++. The problem statement revolves around a string of characters and a set of queries, each containing instructions to swap specific characters or perform a horizontal rotation. Our objective is to determine the final configuration of the string after applying all the queries. Through this tutorial, we will explore the intricacies of the ... Read More

The task of flipping 0s in a binary string while considering their adjacent characters has practical applications in various domains. In this tutorial, we delve into the problem of modifying a given binary string by repeatedly flipping the 0s that have different adjacent characters. Specifically, we aim to solve this problem within the context of C++ programming. The solution involves iteratively scanning the string and applying the necessary flips based on the provided logic. By leveraging the string manipulation capabilities, we can efficiently transform the binary string by flipping 0s K times, ensuring that each flip adheres to the ... Read More

In this tutorial, we delve into the problem of dividing a given string into two non-empty subsets, where the first subset is the reverse of the second subset. We aim to provide an efficient solution to count the number of ways to achieve such partitions. By leveraging the power of the C++ programming language, we present a solution that utilizes bitmasking and string manipulation techniques to iterate through all possible partitions and validate them against the given condition. We will explore the step-by-step implementation of the solution, discussing the algorithm and code structure. Additionally, we will provide a ... Read More

Count possible decoding of a given digit sequence with hidden characters is a fascinating problem in the realm of string decoding. In this tutorial, we delve into the challenge of decoding a sequence of digits that may contain hidden characters denoted by asterisks ('*'). The task at hand is to determine the number of ways these hidden characters can be decoded, taking into account a specific mapping of letters from A to Z to the digits 1 to 26. We present an efficient solution using the power of C++ programming language and dynamic programming techniques. By ... Read More

In this tutorial, we will explore a problem statement that involves checking whether a string, formed by combining the first X characters and the last X characters of a given string, is a palindrome or not. A palindrome refers to a sequence of characters that remain unchanged when reading both forwards and backwards. The task is to determine if the resulting combined string, derived from the specified characters at the beginning and end of the original string, exhibits palindrome properties. To accomplish this, we will delve into an effective solution using the C++ programming language. By breaking ... Read More

Check if a given pattern exists in a given string or not including wild cards * and . is a common problem in computer science and programming. In this problem, we are given a string (text) and a pattern, which can contain wildcard characters '*' and '.', and we need to check if the pattern matches the text or not. This problem is encountered in a wide range of applications, such as search engines, file systems, and network protocols. In this tutorial, we will discuss a simple and efficient solution to this problem using C++. We will start ... Read More

Checking if a permutation of S2 can be obtained by adding or removing characters from S1 is a common problem in computer science. This problem is of great significance in various domains, including data processing, text analysis, and pattern recognition. In this tutorial, we will be presenting a solution to this problem using C++ programming language. The approach involves analyzing the characteristics of S1 and S2 to establish whether S2 can be rearranged to form a permutation of S1. We will be providing the C++ code for this approach along with explanations to help readers understand the problem ... Read More

Partitioning a string into palindromic strings of at least length 2 with every character present in a single string is a challenging problem in computer science. The task is to take a string and divide it into multiple substrings, each consisting of at least two characters and containing every character of the original string only once. The objective is to determine if each substring is a palindrome or not. In this tutorial, we will provide a solution to this problem using C++. We will discuss the algorithm and the code implementation step by step, along with providing two test ... Read More