Emily Rosemary Collins

💡 Problem Formulation: Python’s Matplotlib library is a popular tool for creating a variety of plots, including curved lines. Often, we want not only to draw a curved line but also to label it to convey information effectively. How can one easily add a title to a singular curved line in a Matplotlib plot? Ideally, … Read more

💡 Problem Formulation: We aim to find out the number of possible positions in a line for n persons with the condition that certain individuals are fixed at the front or back. For example, if there are 5 people, and 1 must be at the front while another must be at the back, we want … Read more

💡 Problem Formulation: This articles provides solutions to the problem of finding the length of the longest sublist within a list that contains numbers appearing repeatedly with a maximum of K operations. Each operation can change any element to any other integer. For instance, given the input array [1, 1, 3, 2, 2] and K … Read more

💡 Problem Formulation: You are given a list of words and your task is to write a program to find the length of the longest contiguous sublist in which all words start with the same letter. For instance, given the list [“alpha”, “ape”, “baby”, “bear”, “dog”, “duck”], the desired output is 2, representing the two … Read more

💡 Problem Formulation: The challenge is to create a Python program that identifies the lexicographically largest mountain list. Here, a ‘mountain list’ refers to a list of integers where the sequence initially strictly increases to a peak and then strictly decreases. Given a list such as [0, 3, 2, 1], the desired output would be … Read more

💡 Problem Formulation: Given an array of integers and an integer k, the goal is to maximize the sum of the array’s elements by negating any element up to k times. Consider the problem where we have the input array [3, -1, 0, -2] and k equal to 3. The output should be a maximized … Read more

💡 Problem Formulation: Imagine you’re given an array and an expression involving its elements. You want to determine the value of a certain variable or the arrangement of the array that maximizes the expression’s value. For example, given an array [1, 4, 3, 2] and the task to maximize sum(array) * min(array), we seek the … Read more

💡 Problem Formulation: A local peak element in a list of numbers is an element that is not smaller than its neighbors. For an element at index i, this implies that list[i] >= list[i-1] and list[i] >= list[i+1]. The goal is to find all indices of such local peak elements. For instance, given the list … Read more

💡 Problem Formulation: Finding multiples of a number is a common mathematical task, but what if we’re interested in multiples with exactly two digits? In Python, we want to write programs that will return multiples of a given number n, such that the multiples have only two digits. For instance, if the input is 5, … Read more

💡 Problem Formulation: We often encounter situations where we need to ascertain if all elements in a collection occur an even number of times. This is a common task in data processing and analysis. For instance, given the input array [4, 2, 4, 2, 4, 2], our program should confirm that all elements appear an … Read more

💡 Problem Formulation: Given a set of points with Cartesian coordinates, the task is to sort them based on their polar angles, which are measured from the positive x-axis towards the points. For instance, the input [(1, 1), (0, 1), (-1, -1)] should output [(0, 1), (1, 1), (-1, -1)] when sorted by ascending polar … Read more

💡 Problem Formulation: If we have two arrays of varying lengths, with disparate elements, the task is to reach the same sum for both arrays by incrementally increasing or decreasing their elements through the minimum number of operations. For instance, given arrays [1, 2, 3] and [10, 20], the equal sum can be achieved with … Read more