Emily Rosemary Collins

💡 Problem Formulation: You have an array where initially, the sequence of elements decreases and then strictly increases, or vice versa—formulating a “turning point” or “peak” in the sequence. The task is to identify the index of this turning element. For instance, with an input array [5, 4, 3, 2, 3, 4, 5], the output … Read more

💡 Problem Formulation: A bitonic sequence is an array of integers that starts off with an increasing order of elements and then transitions into a decreasing order. The highest value in this sequence is referred to as the “bitonic point”. This article aims to demonstrate how to find that point efficiently in Python. For instance, … Read more

💡 Problem Formulation: Web scraping is a common task in data gathering, and fetching hyperlinks from a webpage is a foundational aspect of it. This article elucidates how to efficiently extract all href attributes from anchor tags in a webpage using Selenium with Python. For instance, we might have a webpage with numerous links and … Read more

💡 Problem Formulation: Consider a given mapping where digits are associated with certain characters, similar to the way digits are linked to letters on a telephone keypad. The problem involves finding all possible strings that can be formed from the characters corresponding to a given sequence of digits. For instance, if ‘2’ maps to ‘abc’ … Read more

💡 Problem Formulation: The task at hand is to devise methods in Python that can efficiently locate and return all the distinct palindromic substrings within a given string. For instance, given the input string “aabbbaa”, the desired output would be a collection of substrings like [“aa”, “bb”, “bbb”, “aabbaa”], including duplicates only if they occur … Read more

💡 Problem Formulation: We frequently encounter situations where we need to simulate or track the process of a sorting algorithm. This can be particularly important for educational purposes, algorithm analysis, or optimization tasks. In this case, the challenge is to perform an array sort using precisely ‘k’ calls to a merge sort function in Python. … Read more

💡 Problem Formulation: Automating the login process on web pages is a common task during web scraping or testing. Precisely, filling out username and password fields on a login page using Selenium WebDriver in Python is a frequent necessity. Inputs are typically the username and password strings, while the desired output is successful sign-in into … Read more

💡 Problem Formulation: Given a postorder traversal of a binary search tree (BST), the task is to reconstruct the original BST. The postorder traversal is a sequence of values visited as per postorder traversal of the BST. For instance, if the input postorder array is [1, 3, 2, 5, 7, 6, 4], the desired output … Read more

💡 Problem Formulation: What is an Achilles number? An Achilles number is a number that is powerful, meaning all of its prime factors are squared, but it is not a perfect power (i.e., it cannot be expressed as m^n for any integers m > 1 and n > 1). In this article, we explore five … Read more

💡 Problem Formulation: We are faced with a scenario where we must determine the legality of a king’s move on a chessboard that has been altered by the presence of ‘n’ knights. With Python, we wish to assess if there exists at least one valid move for the king. An example input would be the … Read more

💡 Problem Formulation: A primorial prime is a prime number that is one less or one more than a primorial. The primorial of a number is the product of the first n primes. Our objective is to determine whether a given number is a primorial prime. If we take the input 30, for example, the … Read more

💡 Problem Formulation: In Python, checking if a number is a “Trojan number”—a number that remains the same when its digits are squared and concatenated—requires specific checks and computations. The goal is to input a number and determine whether it is a Trojan number. For instance, the input 248 should return True since squaring and … Read more