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In this problem, we will perform the given operations on the array elements and find the maximum sum at last. Here, in each operation, we can select at most X[p] elements from the array and replace them with the Y[p] elements to maximize the sum. In the naïve approach, we will find X[p] array elements, which are smaller than the Y[p] elements, and replace them with Y[p]. In the efficient approach, we will use the priority queue to get the maximum sum. Problem statement − We have given nums[] array containing the N numbers. Also, we have given ... Read More
In this problem, we will find the maximum absolute difference between the sum of all nodes of any two levels. We can use the queue data structure to traverse through each binary tree level. While traversing each level, we can keep track of the maximum and minimum sum and return the absolute difference at last. Problem statement − We have given a binary tree containing the positive and negative integer values. We need to find the maximum absolute difference of the sum of all nodes of any two levels. Sample examples Input ... Read More
It is essential to name databases, tables, and columns appropriately when developing a database for readability, maintainability, and efficient communication between developers and users. Consistent naming standards facilitate cooperation and increase comprehension of the database structure. In order to maintain clarity and consistency, we will go over the recommended practices for naming databases, tables, and columns in this post. Database naming conventions − The most advanced container for arranging related data is a database. Think about the following recommended practices when naming databases − Use names that are meaningful and descriptive − Pick a name that accurately describes ... Read More
In this problem, we will maximize the shortest path between the vertex 1 to N by adding the edge between two selected vertices. Here, we will track the distance of each node of the graph from the 0th and N − 1 nodes. After that, we will insert the single edge between any two selected vertices in such a way that we can maximize the shortest path between 1 to N. Problem statement − We have given an undirected graph. The graph contains the N vertices and M edges. Also, we have given the s_edges[] array containing the K−selected ... Read More
In this problem, we will find the length of the longest subarray so that we can make all subarray elements the same by adding some positive integer values, and the sum of added numbers to each element shouldn’t increase than K. The naïve approach is to find the cost of making all elements the same in each subarray of the given array. Finally, consider the length of the subarray whose cost is less than K and the length is maximum. However, we will use the queue data structure to solve the problem efficiently. Problem statement − We have given an ... Read More
In this tutorial, we will learn to implement the hypergraph in C++. Definition − The hypergraph is a special version of the graph. In which the single can connect 2 or more vertices. In a normal graph, the single edge can connect only 2 vertices, but a hypergraph is a generalization of the graph and can be used to connect more than 2 vertices with the single edge. In the hypergraph, the edge is called the hyperedge. We can represent the hypergraph with H(E, V), where E is a hyperedge and v is the set of vertices connected by the ... Read More
The foundation of database systems is a broad vocabulary that facilitates communication about the numerous facets of data storage, administration, and retrieval. In order to further your comprehension, we will go through the important terms used in database systems in this article, along with comprehensive explanations and applicable examples. Entity − An entity is a specific real-world thing or idea that we wish to represent and keep data about. For instance, students, professors, courses, and departments might all be considered entities in a university database Attribute − An attribute is a representation of a particular quality or trait of ... Read More
In this problem, we will count the number of elements removed from the array before they are inserted in the array. The logical part for solving the problem is that check for all numbers that its position in the remove[] array before its position in the insert[] array. If yes, we can count that particular element of the remove[] array in the answer. However, we will use the map data structure to improve the performance of the code. Problem statement − We have given an insert[] and remove[] arrays containing first N integers. The insert[] array represents the order of ... Read More
In this problem, we will find the largest multiple of 3 using the array elements. The naïve approach is that generate all possible combinations of array elements and check whether it is divisible by 3. In this way, keep track of the maximum possible multiple of 3. The efficient approach is using three queues. We can use queues to store elements based on the remainder after dividing it into 3. After that, we can remove some elements from the queue to make a multiple of 3 from the remaining array elements. Problem statement − We have given an array ... Read More
Modern information management rely heavily on database systems because they make it possible to store, retrieve, and manipulate massive volumes of data effectively. Designing reliable and scalable databases requires a thorough understanding of the principles and architecture of database systems. The essential ideas and complexities of database systems will be covered in detail in this article, along with examples from everyday life to show how they might be used in real-world situations. Concepts of Database Systems Data − Data is the central component of every database system. The information that has to be handled and saved is represented by ... Read More