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In this article, we will implement a C++ program to find whether a number is a power of two. So, you are given a positive integer n; the task is to find if the given number is a power of 2 or not. Let's see some of the numbers that represent the power of two. 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048 ... Example Scenario Let's see the following example scenario: Input: 4 Output: yes Explanation: 22 = 4 Input: 16 Output: yes Explanation: 24 = 16 Input: 5 Output: no Explanation: ... Read More
In this article, We implement a C++ program to print sum of series like 13 + 23 + 33 + 43 + .......+ n3 till the nth term. Given an integer n, calculate the sum of the cubes of the first n natural integers. So, we have to cube of 'n' natural integers and sum the results. Example Scenario Let's understand the following example scenario: Input: n = 4 Output: 100 Explanation: 13 + 23 + 23 + 43 Another example scenario: Input: n = 5 Output: 225 Explanation: 13 + 23 + 23 + 43 + 43 ... Read More
In C++, a Binary tree is a generalization of the Binary Search Tree (BST). A B-tree can have more than two children. It is also known as a balanced tree data structure that maintains sorted data and allows searches, sequential access, insertions, and deletions in logarithmic time. It is optimized for a system that reads and writes large blocks of data. Properties of B-tree As we discussed in the introduction B-tree is self-balanced tree where a node can have multiple children. It maintains the balance by making sure that all leaf nodes are at the same level. Following is the properties ... Read More
The mutable keyword in C++ is a storage class specifier. It enables non-static, non-const, and non-reference data members (i.e., mutable data member) of a class to be changed even when the object containing them is declared constant. Mutable data members are those members whose values can be changed in runtime even if the object is of constant type. It is just the opposite of a constant. What is Need of Mutable? Sometimes, it is necessary to modify one or more data members of a class/struct through the constant function, even if you do not want the function to update another ... Read More
In C++, calling a virtual function inside a constructor or destructor is dangerous and should generally be avoided. Following are the reasons to avoid calling: When a constructor (or destructor) is running, the object is not fully built (or fully destroyed). At that time, the virtual function table (vtable) points to the version of the class currently being constructed or destructed, not the most derived version. What Happens When You Call a Virtual Function in a Constructor? If you call the virtual function inside a constructor: ... Read More
In this article, we will learn about the ConcurrentHashMap and HashTable in Java. First, we will know about ConcurrentHashMap, the syntax of ConcurrentHashMap, and an example after that will learn about HashTable, the syntax of HashTable, and an example. At the end, we will see a table showing the difference between ConcurrentHashMap and HashTable. What is ConcurrentHashMap in Java? ConcurrentHashMap is a class that was introduced in JDK 1.5. The ConcurrentHashMap is threadsafe as it allows multiple threads to read and write the data without locking the entire map. ConcurrentHashMap applies locks only at the bucket level, called a fragment, while ... Read More
The problem statement is to remove the nth character from the given string. Let's understand with an example. Consider my_string = "Tutorialspoint". The given value of n is 6; then we need to remove the 5th character from the string. Because the index value starts from zero. And it should result in "Tutorialspoint". Removing nth Character using a for Loop The for loop can be used to remove the n-th character from a string. In this approach, we iterate through each index of the string and print the characters. If the index value is equal to the given (n-1)th value, we ... Read More
In Python, we can return an object from a function, using the return keyword, just like any other variable. The statements after the return will not be executed. The return keyword cannot be used outside the function. If the function has a return statement without any expression, then the special value None is returned. In the following example, the function returned the sum of two numbers - def Sum(a, b): return a+b my_var1 = 23 my_var2 = 105 result_1 = Sum(my_var1, my_var2) # function call print(result_1) Following is an output of ... Read More
What is Modular Exponentiation? To calculate Modular exponentiation, we need to raise a base to an exponent and then calculate the modulus of the result. This includes 3 integers: base, exponent, and modulo. Following is the syntax of the modular exponentiation in Python - (base**exponent) % modulo For instance, consider (2^5) % 5, which indicates 2 raised to the power of 5, which results in 32; When the modulo operation is performed, it returns the remainder, i.e., 32 % 5 is 3. Modular Exponentiation using Recursive Function A function that calls itself is known as a recursive function. Following is ... Read More
A "word cloud" is a visual representation of text data, where the size of each word indicates its frequency or importance within the dataset. It helps us to identify the most common and important words in a text. It is typically used to describe/denote big data in a word. In this article, we will create a word cloud on the Python programming language, and the data is accessed from Wikipedia. Modules to create a Word Cloud in Python Following are the modules required to create a word cloud in Python : Install wordcloud Before installing the word cloud module, you have ... Read More