Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles by Rohan Singh
Page 5 of 15
Python - Golomb Encoding for b=2n and b!=2n
Golomb encoding is a data compression technique used to encode non−negative integers with a specific distribution. It was introduced by Solomon W. Golomb in 1966 and has been widely used in various applications, including video and image compression, information retrieval, and data storage. In this article, we will explore Golomb encoding and understand the two cases i.e. base is a power of 2(b=2^n) and when the base is not a power of 2 (b ≠ 2^n). Golomb Encoding for b=2^n (Base is power of 2) When the base is a power of 2, Golomb encoding becomes relatively simpler. Let's consider ...
Read MorePython - Get the object with the max attribute value in a list of objects
In Python, we can get the object with a max attribute value in a list of objects using the max() function with a lambda function, using the operator module, using a custom comparison function, etc. In this article, we will explore different methods that can be used to get the objects with the max attribute value. Algorithm To get the object with the maximum attribute value in a list of objects, you can follow this common algorithm: Initialize a variable, let's call it max_object, to None initially. Iterate over each object in the list. For each object, compare its ...
Read MorePython - Get the indices of all occurrences of an element in a list
To retrieve the indices of all occurrences of a specific element in a list using Python we can use methods like using for loop, using list comprehension, using enumerate() function, using the index() method in a while loop, etc. In this article, we will explore these different methods and perform the operations to get the indices of all occurrences of an element in a list. Method 1: Using for loop In this method, we start iterating through the list and comparing each element to the desired element. If the element matches we add its index to the index list. Algorithm ...
Read MorePython - Get sum of last K list items using slice
In Python, the slice method allows us to extract specific elements from a sequence, such as strings, lists, or tuples. It provides a concise and flexible way to work with subsequences within a larger sequence. In this article, we will explore how to obtain the sum of the last K items in a list using slice operations. Algorithm To find the sum of the last K items in a list, we can follow a simple algorithm: Accept the list and the value of K as inputs. Use the slice operator to extract the last K items from the list. ...
Read MorePython - Get particular Nested level Items from Dictionary
Dictionaries in Python allow you to store key−value pairs, making it easy to organize and access data efficiently. Sometimes, we may need to retrieve specific items from nested levels within a dictionary. We can use the isinstance() with the recursion method and dict.get() method to get the nested−level items from the dictionary. In this article, we will explore different ways to get particular nested−level items from Dictionary in Python. Nested Dictionary A nested dictionary is a dictionary that contains other dictionaries as values. This allows for the creation of hierarchical structures, where data is organized in a tree−like fashion. Each ...
Read MoreHyperlink-Induced Topic Search (HITS) Algorithm using Networxx Module - Python
The Hyperlink−Induced Topic Search (HITS) algorithm is a popular algorithm used for web link analysis, particularly in search engine ranking and information retrieval. HITS identifies authoritative web pages by analyzing the links between them. In this article, we will explore how to implement the HITS algorithm using the Networxx module in Python. We will provide a step−by−step guide on how to install the Networxx module and explain its usage with practical examples. Understanding HITS Algorithm The HITS algorithm is based on the idea that authoritative web pages are often linked to by other authoritative pages. It works by assigning ...
Read MoreHow to Utilize Time Series in Pandas?
Time series data are mostly used when dealing with data that changes with time. Handling these data plays a very important role in data analysis of Time series data. Pandas, a popular data manipulation and analysis library in Python, provides robust functionality for working with time series data. In this article, we will understand through examples and explanations how to effectively utilize time series in Pandas. Ways to Utilize Time Series Data In the below methods we will be using the Electric_ptoduction time series data set that is taken from Kaggle. You can download the data set from here. Importing ...
Read MoreHow to Sort a Dictionary by Kth Index Value in Python?
In Python, we can sort a dictionary by the value of a specific index, often referred to as kth index value by using various functions like Using the sorted() Function with a Lambda Function, Using the itemgetter() Function from the operator Module, Using a Custom Function with the sorted() Function, etc. In this article, we will understand these methods and how we can use them to sort a dictionary by kth index value in Python. Method 1: Using the sorted() Function with a Lambda Function This method utilizes the sorted() function with a lambda function as the key parameter to ...
Read MoreHow to search the max value of an attribute in an array object ?
When working with objects, we often need to search for the max value of an attribute in an array of objects. We can use various javascript inbuilt functions like reduce() method, and map() method and we can also use a simple for loop to search for the max value. In this article, we will explore all these methods and explain the methods with the help of examples. Method 1:Using for loops In this method, we iterate through the array of objects using a loop and compare the attribute value of each object with the current maximum value. Syntax for ...
Read MoreHow to search JSON tree with the help of jQuery?
JSON (JavaScript Object Notation) is a data format that is widely used when transmitting data between the server and a web application. In many cases, the JSON data has a complex structure, and searching for specific data requires some special function implementation. jQuery, a popular JavaScript library, provides powerful methods to navigate and search JSON trees efficiently using the .each() method, filter(), and grep methods. In this article, we will explore all these methods to search JSON trees with the help of jQuery. Understanding JSON Trees JSON data is organized in a hierarchical structure, often referred to as a JSON ...
Read More