Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
While presenting or explaining some facts and figures using Pandas DataFrame, we might need to highlight important rows and columns of the given data that help in making them more appealing, easier to understand and visually stunning. One way of highlighting the Pandas DataFrame's specific columns is by using the built-in method applymap(). Python Program to Highlight Pandas DataFrame using applymap() To understand the code properly, we need to discuss the basics of Pandas and applymap(): Pandas It is an open-source Python library that is mainly used for data analysis and manipulation. It can handle ... Read More
In this article, we will explore the problem of finding the longest substring in a given string that contains K distinct vowels. The problem can be solved using different algorithms in C++. This problem is commonly encountered in the field of computer science, particularly in text processing and natural language processing tasks. It tests one's ability to manipulate strings and handle edge cases. Syntax In the realm of C++, the class std::string epitomizes a string datatype. This versatile entity enables storage and manipulation of character sequences. The template class std::vector embodies a dynamic array, granting the ability to resize arrays ... Read More
String manipulation is an essential skill in programming, as it helps us process and analyze text data efficiently. C++ provides a rich set of string manipulation functions and objects, making it easier to work with text data. In this article, we will discuss how to reverse a string according to the number of words in C++. Approaches Approach 1 − Using stringstreams and vectors Approach 2 − Using substrings and string manipulation functions Syntax String object in C++: The std::string class is a part of the C++ Standard Library and provides various string manipulation functions. String manipulation functions: ... Read More
In the realm of C++ programming, it is possible to replace every character of a specified string with a symbol whose ASCII value is elevated by a factor of K compared to the original character. This can be accomplished through the implementation of a straightforward algorithmic technique. This piece delves into the syntax, the algorithm, and two distinct methods to address the problem, complete with code illustrations in C++. Syntax To substitute every character in a string with a character whose ASCII value is multiplied by K, the syntax is as follows − string replace(string str, int K); Here, ... Read More
A dynamic multi-stack is a remarkable data structure that possesses the capacity to store elements in numerous stacks, with an ever-changing quantity of stacks. It can be a daunting task to implement K stacks utilizing only one data structure. In this instructional guide, we shall investigate two distinct techniques to execute dynamic multi-stack (K stacks) using C++. The initial technique employs an array to stock the elements, along with two additional arrays to monitor the topmost and following indices of the stacks. The secondary technique employs a vector of nodes to stock the elements, along with a vector to keep ... Read More
Python provides a powerful library named Matplotlib that creates visual representations in the form of plots and graphs. One of the many features of this library is the ability to plot multiple lines in a single graph that are useful in comparing data sets or visualizing trends over time. We are going to explore the built-in method named 'plot()' that is used for plotting multiple lines in Python Matplotlib. Python Program to Plot Multiple lines in Matplotlib Before jumping to the program directly, let's familiarize ourselves with some basic concepts of Python that will help us ... Read More
Python provides a powerful library named Matplotlib that creates visual representations in the form of plots and graphs. One of the many features of this library is the ability to plot multiple plots within a single figure that are useful when comparing different datasets or visualizing relationships between multiple variables. We are going to explore the built-in method named 'subplots()' of Matplotlib that is used to plot multiple plots. Python program to plot multiple plots in Matplotlib Before jumping to the program directly let's familiarize ourselves with subplots() method of Matplotlib. subplots() method With a single ... Read More
Python provides a powerful library named Matplotlib that creates visual representations in the form of plots and graphs. One of the many features of this library is the ability to plot vertical lines that are used to add a reference line or highlight a specific point on the given plot. The built-in methods 'axvline()', 'vlines()', and 'plot()' of Matplotlib are used to plot vertical lines with customizable parameters such as position, color, and linestyle. We are going to explain these methods with the help of example programs. Plotting vertical line using Matplotlib Let's discuss the in-built methods of ... Read More
Segment Tree is a versatile data structure designed for answering range queries and performing updates on arrays in logarithmic time complexity, where each node stores information related to a specific range of elements in the array. In the context of the Longest Increasing Subsequence (LIS) problem, which requires determining the length of the longest subsequence of a given sequence in which the elements are sorted in increasing order, Segment Trees can be utilized to efficiently compute the Length of Longest Increasing Subsequences in an array. This approach significantly reduces the time complexity compared to traditional methods and has ... Read More
Classification of algorithms helps in selecting the most suitable one for a specific task, enabling developers to optimize their code and achieve better performance. In computer science, algorithms are sets of well-defined instructions used to solve problems or perform specific tasks. The efficiency and effectiveness of these algorithms are crucial in determining the overall performance of a program. In this article, we will discuss two common approaches for classifying algorithms, namely, based on their time complexity and based on their design technique. Syntax The syntax of the main function used in the codes for both approaches − int ... Read More