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Programming Articles
Page 1596 of 2547
C++ Program to Find the Frequency of a Character in a String
A string is a sequence of characters like letters, numbers, symbols, or anything enclosed in double quotes (e.g., "Hello"). Our goal is to find the frequency of a character in a given string, which means counting how many times that specific character appears in the string. Let's look at an example to understand the problem clearly- //Example 1 Input: String: "Tutorialspoint" Character to check: 't' Output: The character 't' appears 3 times in the string. //Example 2 Input: String: "Welcome to Tutorialspoint" Character to check: 'o' Output: The character 'o' appears 4 times in the string. ...
Read MoreBinary search in sorted vector of pairs in C++
In this article, we have a sorted vector of pairs. Our task is to search for a target key using binary search in the given vector of pairs. Binary Search Algorithm The binary search algorithm works on the divide-and-conquer principle as it keeps dividing the array in half before searching. To search for an element in an array using binary search, it should be sorted. In the sorted array, we find the middle element and compare it with the element that has to be searched, and based on the comparison, we either search in the left or right sub-array or ...
Read MorePrint Common Nodes in Two Binary Search Trees in C++
A Binary Search Tree is a data structure that stores data in a sorted order such that for every node, the left subtree contains values less than the node's value, and the right subtree contains values greater than the node's value. In this article, we will solve the problem of finding common nodes in two binary search trees (BSTs). Find Common Nodes in BSTs In this problem, you are given two binary search trees (BSTs) and your task is to develop a program that finds all the common nodes between these two trees. In the other words, the intersection ...
Read MorePrint all odd nodes of Binary Search Tree in C++
A Binary Search Tree is a data structure that stores data in a sorted order such that for every node, the left subtree contains values less than the node's value, and the right subtree contains values greater than the node's value. In this article, we will solve the problem of finding all odd nodes of a binary search tree in C++. Find Odd-Valued Nodes in BST You are given a binary search tree (BST) as input and your task is to write a program that finds all the nodes with odd values and returns them as output. To understand ...
Read MorePrint all even nodes of Binary Search Tree in C++
A Binary Search Tree is a data structure that stores data in a sorted order such that for every node, the left subtree contains values less than the node's value, and the right subtree contains values greater than the node's value. In this article, we will find all even nodes of a binary search tree using C++. Find Even-Valued Nodes in BST You are given a binary search tree (BST) as input, and your task is to write a program that finds all the nodes with even values and returns them as output. To understand better, let's consider the ...
Read MoreJava program to split the array and add the first part to the end
Our task is to write a Java program to split the array and add the first part to the end. Here, the value of k=2, which means we need to keep 2 elements at the end of the array. Input: 67, 45, 78, 90, 12, 102, 34 Output: 78, 90, 12, 102, 34, 67, 45 Split the Java Array, Add the First Part to the End The following are the approaches to split the array and add the first part to the end: By shifting elements Using the reversal method ...
Read MoreCan an anonymous class have constructors in Java?
Anonymous Classes in Java are classes that do not have a name. They are typically used to extend a class or implement an interface without the need for a separate named class. The following are the common uses of anonymous classes:Implementing event listeners.Creating Runnable objects for threads.Providing custom implementations for abstract methods of an abstract class. Constructors in an Anonymous class Anonymous classes cannot have a constructor, but the compiler provides a default constructor for them. This means that when you create an instance of an anonymous class, it will call the constructor of the superclass or the interface it ...
Read MoreBinary Search on Singly Linked List in C++
In this article, we are given a sorted singly linked list, and our task is to search for a given node using a binary search algorithm. The binary search algorithm works on the divide-and-conquer principle as it keeps dividing the list in half before searching. To search for an element in the linked list using binary search, it should be sorted. In the sorted linked list, we find the middle node using two pointers (slow and fast) and compare it with the target node, and based on the comparison, we either search in the left or right sub-list or return ...
Read MoreAngle between a chord and a tangent when angle in the alternate segment is given in C++?
In this problem, we are given a circle whose chord and tangent meet at a particular point. The angle in the alternate segment of a circle is given. We need to find the angle between the chord and the tangent. According to the Alternate Segment Theorem the angle between a chord and a tangent is equal to the angle in the alternate segment of the circle. Chord and Tangent The chord of a circle can be defined as the line segment joining any two points on ...
Read More10 Essential Web Scraping Tools for Data Collection in 2025
Data is more than just a business asset – it's a strategic advantage. Whether you're monitoring competitors, tracking product prices, gathering SEO insights, or creating machine learning models, relevant and structured web data is the modern gold. That’s where web scraping can become your winning strategy. Web scraping is the extraction of digital data and information from websites. Most businesses use it for market research, lead generation, brand monitoring, and much more. But scraping the modern web is way different nowadays, with dynamic content, anti-bot systems, and ever-changing layouts making it more difficult by the day. Depending on your needs, ...
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