💡 Problem Formulation: We are often faced with the challenge of extracting numerical information from text. Specifically, this article addresses the task of counting the number of unique integers present in a given string. For instance, given the input string “abc123def111gh22”, the desired output is 3, corresponding to the unique integers 123, 111, and 22. … Read more
💡 Problem Formulation: You have an array composed of 0s and 1s. Your task is to determine the longest subarray of 1s that can be achieved by removing at most one element from the array. For example, given input [1, 1, 0, 1, 1], the desired output after deletion is 4 because by deleting the … Read more
💡 Problem Formulation: Chessboard squares alternate in color between light and dark. Given an input in the form of a chessboard square identifier (e.g., ‘a1’, ‘d5’), we want to programatically determine whether that square is light or dark. The desired output would be a string “light” or “dark”. Method 1: Using Basic Arithmetic and Modulus … Read more
💡 Problem Formulation: We need a program to determine whether pairs of elements from a given array can be evenly divided by a specified integer k. For instance, if the input array is [2, 4, 6, 8] and k is 4, the pair (4, 8) is divisible by k, but (2, 6) is not. We … Read more
💡 Problem Formulation: This article aims to solve the challenge of dividing a given sentence into k partitions after truncation. For instance, given the sentence “The quick brown fox jumps over the lazy dog” and a partition number k=3, the desired output would be three truncated partitions of similar lengths. We will explore different methods … Read more
💡 Problem Formulation: We wish to compute the sign (positive, negative, or zero) of the multiplication of all elements in a given numerical array. For example, if the input array is [1, -2, -3, 4], since the product is 24, the desired output is positive. Method 1: Manual Iteration and Multiplication This method entails a … Read more
💡 Problem Formulation: This article tackles the challenge of computing the minimum number of operations needed to transform a given array into a strictly increasing sequence. Each operation can increment a selected element by 1. For instance, given an input array [1, 2, 1], the desired output after making the array strictly increasing is [1, … Read more
💡 Problem Formulation: A pangram is a sentence that contains every letter of the alphabet at least once. For example, the classic pangram “The quick brown fox jumps over the lazy dog” uses every letter of the alphabet. In this article, we aim to create a Python program that can verify whether a given sentence … Read more
💡 Problem Formulation: The challenge is to construct a program in Python that accepts a number and a base (k), and returns the sum of its digits when the number is expressed in base k. For instance, if the input number is 345 and base k is 8, the number in base 8 is 531, … Read more
💡 Problem Formulation: Given a list of integers representing the lengths of sticks, the objective is to construct the triangle with the largest possible perimeter. The requirement is to identify a set of three lengths that adhere to the triangle inequality theorem and maximize the perimeter. For example, from the input [3, 6, 2, 7], … Read more
💡 Problem Formulation: When working with strings in Python, one may encounter a scenario where it’s necessary to replace each digit with a specific character. Consider the input string ‘Hello2World8’, the desired outcome would be to replace the digits such as ‘2’ and ‘8’ with a character, for example, an asterisk ‘*’, resulting in ‘Hello*World*’. … Read more
💡 Problem Formulation: Imagine you have an array and you need to find the minimum distance between any position of a target element and a specified starting index. For example, given an array [1, 2, 3, 2, 2, 5] and target element 2, with a starting index of 2, the minimum distance to the target … Read more