## 5 Best Ways to Find a Multiple of n with Only Two Digits in Python

π‘ 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

## 5 Best Ways to Find Local Peak Element Indices in a Python List

π‘ 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

## 5 Best Ways to Find the First Fit Room from a List in Python

π‘ Problem Formulation: Imagine you have a list of different room capacities and a particular size of a group that needs accommodation. Your goal is to find the first room from the list that can fit the group based on its capacity. For instance, if you have a list of room sizes [10, 50, 20, … Read more

## 5 Best Ways to Find the Smallest Index Whose Element is Also Its Value in Python Arrays

π‘ Problem Formulation: Finding the smallest index in an array where the index and its element are the same is a common task in algorithmic challenges. For example, given an array [0, 2, 3, 4], index 0 satisfies the condition since the element at index 0 is also 0. This article explores five ways to … Read more

## 5 Best Ways to Check if a Number is a Fibonacci Term in Python

π‘ Problem Formulation: You need to determine if a number provided by the user is part of the Fibonacci sequence. The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones, usually starting with 0 and 1. Given an input number, the output should clearly indicate whether … Read more

## Finding Substring Anagrams in a String Using Python

π‘ Problem Formulation: Imagine the task of finding all substrings within a given string where an anagram of that substring also appears in the string. For example, in the string “aabab”, the substrings “ab” and “ba” are anagrams and both are present in the string. The goal is to identify such substrings programmatically using Python. … Read more

## 5 Best Ways to Check if a Number Can Be Expressed as a Sum of K Primes in Python

π‘ Problem Formulation: Determining whether a given integer n can be represented as the sum of k prime numbers is a classic problem in number theory and computer science. For instance, given n = 10 and k = 2, we seek a solution that confirms that 10 can indeed be expressed as the sum of … Read more

## 5 Best Ways to Find the Highest Common Factor of a List of Elements in Python

π‘ Problem Formulation: When working with a list of integers in Python, finding the Highest Common Factor (HCF) or Greatest Common Divisor (GCD) can be necessary for mathematical computations, simplifying fractions, or during algorithm development. Consider a list [12, 24, 18]; the aim is to find the highest number that divides all elements without leaving … Read more

## 5 Best Ways to Find the Index with Equal Left and Right Sums in Python

π‘ Problem Formulation: In Python, we seek to find an index in a list where the sum of elements to the left of that index is equal to the sum of elements to the right. For instance, given the list [1, 7, 3, 6, 5, 6], the desired output is 3 since the sum of … Read more

## 5 Best Ways to Find Size of Common Special Substrings of Two Given Strings in Python

π‘ Problem Formulation: This article addresses the computation of special substrings between two strings. A ‘special substring’ implies a substring that occurs in both strings, but also has unique qualifiers such as being a sequence of identical characters. Given two strings, like “abaaa” and “baabaca”, we identify common substrates like “a”, “aa”, or “aaa”, and … Read more

## 5 Effective Ways to Insert an Element into a Linked List at a Specific Position in Python

π‘ Problem Formulation: In Python, manipulating a linked list often requires adding a new element not just at the end, but at a specific position. This article explains how to insert a new element into a linked list before a given position. For instance, if we take a linked list 1 -> 2 -> 3 … Read more

## 5 Best Ways to Count Intervals Intersecting at a Given Point in Python

π‘ Problem Formulation: In computational geometry and various programming scenarios, one often encounters the need to determine the number of intervals that overlap with a specific point. This article details the Pythonic ways to count the number of intervals that intersect a given point. For example, given a list of intervals [(1,4), (2,5), (7, 9)] … Read more