Programming Articles - Page 2139 of 3363

In this problem, we are given an array of N elements. Our task is to find the maximum removal from the array when removal time >= waiting time.So, here we will be removing the elements of the array. The value of the element of the array denotes the removal time(time taken to remove the element from the array).The element has a waiting time which is the time it will have to wait till it will get removed.The element can be removed from the only if the removal time is greater than the time it has to wait.We have to find ... Read More

Problem statementGiven n wines in a row, with integers denoting the cost of each wine respectively. Each year you can sale the first or the last wine in the row. The price of wines increases over time. Let the initial profits from the wines be P1, P2, P3…Pn. On the Yth year, the profit from the ith wine will be Y*Pi. For each year, your task is to print start or end denoting whether first or last wine should be sold. Also, calculate the maximum profit from all the wines.ExampleIf wine prices are {2, 4, 6, 2, 5} then output ... Read More

In this problem, we are given a number n. Our task is to find the maximum count of primes whose sum is equal to given N.Here, we will find the maximum number of prime numbers that when added will be equal to the number.The prime number are those number which can be divide by either themselves or one.let's take an example to understand the problem −Input − N = 9Output − 4Explanation −9 can be repressed as the sum of prime numbers in the following ways: 2, 2, 2, 3 3, 3, 3 2, 2, 5 2, 7 Out of ... Read More

Problem statementGiven an array of n integers and q queries, each query having a range from l to r. Find the maximum prefix-sum for the range l – r.ExampleIf input array is arr[] = {-1, 2, 3, -5} and queries = 2 and ranges are: l = 0, r = 3 l = 1, r = 3 then output will be 4 and 5.The range (0, 3) in the 1st query has [-1, 2, 3, -5], since it is prefix, we have to start from -1. Hence, the max prefix sum will be -1 + 2 + 3 = 4The ... Read More

In this problem, we are given two arrays A and B of n elements each. Our task is to create a program to find the maximum possible XOR of every element in an array with another array.We have to compute the maximum XOR for each element of array A with array B i.e. for each element of array A we will select an element in array B which will have the maximum XOR value.Let's take an example to understand the problem −Input −array A = {3, 6 ,11, 9} array B = {8, 2, 4, 1}Output −11 14 15 13Explanation−Let’s ... Read More

Problem statementGiven an Array of non-negative integers. Find out three elements from the array which form a triangle of maximum perimeterExampleIf input array is {5, 1, 3, 5, 7, 4} then maximum perimeter is (7 + 5 + 5) = 17AlgorithmSort the array in non-increasing order. So, the first element will be maximum and the last will be minimumIf the first 3 elements of this sorted array forms a triangle, then it will be the maximum perimeter triangleExample Live Demo#include using namespace std; int getMaxPerimeter(int *arr, int n) {    sort(arr, arr + n, greater());    int maxPerimeter = 0; ... Read More

In this problem, we are given a 2D matrix of size M*N. Our task is to create a program that will find the maximum path sum in the matrix.Here, the maximum path sum in the matrix is defined as the sum of all elements for one row to the last row. The allowed moves for traversing the path are downward move and diagonal move. The start and endpoints can be any element of the first and last row of the matrix respectively.Let's take an example to understand the problemInput −matrix [][] =    3 5 9    1 7 2 ... Read More

In Java, a constructor refers to a special method within a class that is always executed automatically while creating an instance of the class using the new keyword. Its main purpose is initializing the object by providing its fields with initial values so that it is ready for use. A constructor shares the name of the class itself, has no return type, and can be overloaded so that there will be different ways of initializing the objects. If you don’t provide one, Java inserts a default no-argument constructor automatically. What is a Constructor Reference in Java? Constructor reference is like ... Read More

In multithreading environment, two or more threads can access the shared resources simultaneously which can lead the inconsistent behavior of the system. Java uses concept of locks to restrict concurrent access of shared resources or objects. Locks can be applied at two levels −Object Level Locks − It can be used when you want non-static method or non-static block of the code should be accessed by only one thread.Class Level locks − It can be used when we want to prevent multiple threads to enter the synchronized block in any of all available instances on runtime. It should always be used ... Read More

In this article, we are going to learn about implementing a constructor reference with an argument or multiple arguments in Java. Constructor references in Java provide us with a concise way of creating new objects via method references. These are going to enable us to reference a constructor without running the constructor itself so the code looks cleaner and it will be more readable. What is a Constructor Reference? A method reference may also be used with Java 8 constructors. A constructor reference may be defined by employing the class name and a new keyword. The constructor reference may be ... Read More