💡 Problem Formulation: In this article, we’re tackling the challenge of finding the longest “awesome” substring within a given string. An awesome substring is defined as a substring which, when all characters are organized, form a palindrome. For example, given the input “3242415”, a potential output could be “242” or “32423” as these can be … Read more
💡 Problem Formulation: Identifying critical and pseudo-critical edges in a graph is an essential task for understanding the graph’s structure, particularly in applications such as network reliability and traffic flow optimization. A critical edge, if removed, would increase the number of connected components in the graph. A pseudo-critical edge is not critical, but when forcibly … Read more
💡 Problem Formulation: Given a grid or a graph, the goal is to find the maximum score obtainable by traversing through valid paths from a starting point to a destination. This typically involves moving through a matrix, selecting optimal paths based on certain constraints or maximizing some value. An example input could be a 2D … Read more
💡 Problem Formulation: The goal is to determine the maximum score achievable by removing stones from three piles until no more moves are possible, where a move consists of choosing two piles with at least one stone each and removing one stone from each. For example, given the stone piles [3, 4, 5], the desired … Read more
💡 Problem Formulation: This article addresses the challenge of finding the minimum length of a Run Length Encoded (RLE) string after removing up to k characters. RLE is a basic form of lossless data compression where sequences of the same data value are stored as a single data value and count. For instance, if our … Read more
💡 Problem Formulation: Given two arrays, one representing the numbers to be multiplied (nums) and the other representing multipliers (multipliers), we seek a program that finds the maximum possible score. The program should execute multiplication operations, each time multiplying a selected number from the start or end of nums by a multiplier from multipliers. The … Read more
💡 Problem Formulation: In Python, the challenge is to identify the maximum number of non-overlapping substrings that can be extracted from a given string. For instance, given a string “abracadabra”, one might want to find a set of substrings like {“abra”, “cad”} that do not overlap. The desired output would be the count of such … Read more
💡 Problem Formulation: Imagine having a program dynamic enough to decide if we can indulge in our favorite candy on our favorite day. Such a utility can intertwine calendars, dietary plans, and personal preferences to yield a simple yes or no. For instance, if our favorite day is “Saturday” and we have a green light … Read more
💡 Problem Formulation: Given a set of houses and mailboxes, the challenge is to write a Python program that accurately computes the minimum distance each house must cover to reach the nearest mailbox. For example, if houses are located at positions [1, 2, 3] and mailboxes at [2, 4], the expected output would be a … Read more
💡 Problem Formulation: The task is to compute the lowest cost to paint a row of houses in such a way that no two adjacent houses have the same color. Given a cost matrix where the element at the i-th row and j-th column represents the cost to paint the i-th house with j-th color, … Read more
💡 Problem Formulation: Imagine you have released a ball onto a two-dimensional grid, and you need to predict which box the ball will land in after bouncing off the grid’s edges. The grid is represented by a matrix, and the movement pattern of the ball is given. The challenge is to calculate the box’s coordinates … Read more
💡 Problem Formulation: Given two strings, how can we determine if they are “close” to each other? “Closeness” can be defined in different ways: character composition, sequence, edit distance, etc. For instance, the input strings “listen” and “silent” are close because they contain the same characters. However, “kitten” and “sitting” have a few different characters … Read more