Emily Rosemary Collins

💡 Problem Formulation: We want to know the remainder of a number consisting of n consecutive 1’s when divided by another number m. For example, if n = 5 and m = 2, the number is 11111, and the remainder when dividing this number by 2 is 1. Method 1: Brute Force String Conversion This … Read more

💡 Problem Formulation: Given a set of natural numbers up to n and a divisor k, the objective is to find all unique pairs of numbers from the set such that their sum is divisible by k. For example, given n=5 and k=3, the pairs satisfying the condition are (1, 2), (4, 2), and (5, … Read more

💡 Problem Formulation: Finding common fractions between a defined minimum and maximum value can be a challenging task if constraints are involved. For instance, given a range between 1/4 and 3/4, with a constraint where the denominator cannot exceed 10, one might seek to find all fractions within this range that meet the criteria. The … Read more

💡 Problem Formulation: The task at hand is to devise a Python program that can compute the probability that a proper divisor of a given positive integer n is an even perfect square. For example, if n = 36, proper divisors such as 4 and 16 are even perfect squares. The desired output is the … Read more

💡 Problem Formulation: Python coders often need to check if a given pair of numbers (x, y) are even or odd. This fundamental task can guide the flow of logic in various algorithms and applications. For instance, given the input (x, y) as (4, 7), the desired output would indicate that x is even, and … Read more

💡 Problem Formulation: The problem focuses on finding all possible subsets of a set of vertices, each vertex having an associated color, that fulfill specific conditions. For instance, given a set of vertices with different colors, the goal may be to find all subsets where no two vertices share the same color. An example input … Read more

💡 Problem Formulation: The challenge is to determine the number of expected moves to win at the Lotus and Caterpillar game using Python programming. This stochastic game resembles moving along a numbered path, where the outcome of a die roll or any probabilistic event dictates the next position. Our input may consist of game rules … Read more

💡 Problem Formulation: Imagine you have an unsorted array and you want to determine the average number of random shuffles needed to sort the array. The task is to create a program in Python that can predict this number. For instance, given an array [3, 2, 1], you might want to find out how many … Read more

💡 Problem Formulation: Permutations are a fundamental concept in combinatorics, and finding elements that satisfy specific criteria within all permutations can be a challenging task. This article explores how to count the number of elements in all permutations of a given list that comply with predetermined conditions using Python. For example, given a list [1, … Read more

💡 Problem Formulation: You are tasked with determining the number of distinct ways to arrange letters so that for every prefix and suffix in any arrangement, the condition of having more ‘b’s than ‘a’s is met. For example, if you are given a string with 2 ‘b’s and 1 ‘a’, the arrangement “bba” would be … Read more

💡 Problem Formulation: Climbing a staircase can be approached in a variety of ways, especially when different stride lengths are possible. If we consider a staircase with ‘n’ steps, the challenge is to count the distinct ways to reach the top given that one can climb either 1 or 2 steps at a time. For … Read more

💡 Problem Formulation: In certain computational problems, we are tasked with finding the lexicographically smallest string that represents the path from a starting point to a destination. Specifically, we are given a graph-like structure where each move corresponds to appending a character to a string. The challenge lies in determining the sequence of moves that … Read more