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In C++, both count
Array Class In C++, the array class is part of the standard library and is known for its fixed size. The C++ array class, introduced in C++11, offers a better alternative to C-style arrays. The following are the advantages of the array class over a C-style array: Array class knows its size, whereas a C-style array does not have its size. So when passing to functions, we don't need to pass the size of the array as a separate parameter. C-style array there is more risk of array being decayed into ... Read More
In this articles we will find the kth Smallest Element by Partitioning the Array in C++, let's see input/output scenario: Input / Output Scenario Following is the input-output scenario: Input: arr[] = {7, 2, 1, 6, 8, 5, 3, 4} Output: 3 In the above scenario, after sorting the array, it becomes {1, 2, 3, 4, 5, 6, 7, 8}, so the kth smallest element is 3. An array is a linear data structure that is a collection of elements of the same type in a contiguous memory location. So, to partition a given array, we need to use ... Read More
The median is defined as the middle value of a sorted list of numbers, and the middle value is found by ordering the numbers in ascending order. Once the numbers are ordered, the middle value is called the median of the given data set. Here, in this article, we have two different sorted arrays and need to find the median of these two array using binary search. Median depends on the sorted combined array. So, the following cases may occur: If the length of the combined array is odd, then the median should be the ... Read More
A subarray is a contiguous slice of an array, and maintains the order of elements naturally. (i.e., the elements of the subarray occupy consecutive positions). For example, the subarrays of an array {1, 2, 3} are {1}, {1, 2}, {1, 2, 3}, {2}, {2, 3}, and {3}. Input / Output Scenario Let's see the following input/output scenario: Input: arr[] = {1, 4, 5, 3, -1} Output: 13 Explanation: Subarray {1, 4, 5, 3} has the maximum sum 13. Input: arr[] = {1, 2, -3, 4, 5, -1} Output: 9 Explanation: Subarray {1, 2, -3, 4, 5} has the ... Read More
In object-oriented programming, coupling is a term used to describe the level of dependency each class or component of an application has on another. Tight coupling in Java means features of different classes and objects have high dependence on one another, whereas Loose coupling means components have very low or no dependency on one another. This article explains how tight coupling is different from loose coupling in Java. Tight Coupling in Java In tight coupling, if the implementation of one class changes, the dependent class might also need to be changed. It makes Java code less flexible and more difficult ... Read More
The import statement is used to bring certain classes and interfaces from other packages into our Java program, so we can access them without using their fully qualified names. We can use the short name instead. Java also supports static import statements, which were introduced in Java 5. It helps in accessing static members such as methods and constants. In this article, we are going to learn the difference between import and static import statements in Java. The import Statement in Java To access a class or method from another package, we need to either use the fully qualified ... Read More
A Type casting in Java is used to convert objects or variables from one data type to another. When we are converting or assigning one data type to another, automatic conversion will take place (if the types are compatible and the conversion is safe). However, if there is a risk of data loss, the conversion must be done explicitly by the programmer. Let's understand the types of Java type casting and the difference between them in this article. Types of Type Casting in Java Java Type Casting is classified into two types, which are: ... Read More
The NullPointerException is a subclass of the RuntimeException class. It is defined in java.lang package of Java. In this article, we are going to understand the reasons for NullPointerException and how to resolve them. Reason for NullPointerException in Java A NullPointerException is a runtime exception thrown by the JVM when our application code, another referenced API, or the middleware encounters the following conditions: Attempting to invoke an instance method of a null object. ... Read More
The article will discuss different ways to remove elements from an ArrayList. Below is a list of methods that can help in removing elements from an ArrayList: Using the remove() Method of List Interface Using the remove(object) Method Using the clear() Method Using the removeAll() Method Removing a Single Element using the remove() Method The remove() method of the List interface accepts an integer value representing an index as a parameter and removes an element at the specified index. Following is the ... Read More