Python

💡 Problem Formulation: In this article, we address the problem of counting pairs of consecutive elements in a Python list. Specifically, given a list of integers, the goal is to find the number of pairs where two adjacent elements are equal. For example, in the list [1, 2, 2, 3, 4, 4, 4], there are … Read more

💡 Problem Formulation: The task is to write a Python program to remove characters from a string if they have appeared earlier in the string. Consider the input string “interviewquery” as an example. The desired output after removing duplicate characters that have occurred before would be “intervwquy”. Method 1: Using OrderedDict This method involves using … Read more

💡 Problem Formulation: Given a text input, the goal is to develop a Python program that can count the number of distinct words and determine the frequency of each word. Imagine processing the string “apple orange banana apple apple banana”. The desired output would list ‘apple’ with a frequency of 3, ‘orange’ with a frequency … Read more

💡 Problem Formulation: Imagine you are working with a table of data in Python, and you need to sort this table based on one of its attribute indexes. Whether you’re managing user data, sales figures, or any other dataset, sorting can help you organize and analyze your information efficiently. For instance, you have a list … Read more

💡 Problem Formulation: Determining the perimeter of a polygon is a fundamental geometric problem, which involves calculating the sum length of all the sides of the polygon. For instance, given the coordinates of a pentagon’s vertices, the goal is to compute the total distance around its five edges. This article explores various Python methods to … Read more

💡 Problem Formulation: You have a collection of elements and multiple sets. The goal is to determine the ‘happiness’ of the collection based on the presence of its elements in two specific sets: a ‘happy’ set and a ‘sad’ set. For each element in the collection that is in the happy set, happiness increases by … Read more

💡 Problem Formulation: When dealing with mathematical relations, specifically functions, it is crucial to distinguish whether a given set of ordered pairs (domain and range) forms a function. A set forms a function if each element in the domain maps to exactly one element in the range. In Python, this can be programmatically verified. Imagine … Read more

💡 Problem Formulation: The task is to find the angle at the base of a right-angled triangle, using the midpoint of the hypotenuse as one vertex and the ends of the base as the other vertices. The input would typically be the lengths of the sides of the triangle, and the output is the angle … Read more

💡 Problem Formulation: Often in programming, there’s a need to calculate the amount of time that has elapsed between two points. For example, you might want to know the difference between timestamps ‘2023-03-01 14:00:00’ and ‘2023-03-01 16:30:00’. The desired output would be a representation of this time difference, such as ‘2 hours, 30 minutes’ or … Read more

💡 Problem Formulation: Given a string, the challenge is to divide it into k distinct partitions such that each partition is as even as possible. For instance, if the input string is “aabbccdd” and k = 4, the desired output would be [“aa”, “bb”, “cc”, “dd”]. This article explores various methods to achieve this partitioning … Read more

💡 Problem Formulation: In the Minion game, two players create words from a given string. The player with the most points wins. A vowel opening a word scores points equal to the remaining length of the string. The task is to write a Python program that computes the scores and declares the name of the … Read more

💡 Problem Formulation: In Python, you may often need to manipulate list items. A common task is updating a list so that each element becomes the absolute value of the original element. For instance, given the input list [1, -4, 3, -2], the desired output would be [1, 4, 3, 2]. This article explores five … Read more