Beautiful Days at the Movies | Hackerrank Solutions

Lily likes to play games with integers. She has created a new game where she determines the difference between a number and its reverse. For instance, given the number 12, its reverse is 21. Their difference is 9 . The number 120 reversed is 21, and their difference is 89. She decides to apply her game to decision making. She will … Read more

Deleting Nodes with Greater Values on the Right Side in a Linked List

Introduction:In programming, efficiently managing linked lists is a crucial skill. Deleting nodes with greater values on the right side is a common problem encountered while working with linked lists. In this tutorial, we’ll explore an optimized algorithm to tackle this problem using Python programming. We’ll delve into the implementation details, algorithmic insights, and optimization techniques … Read more

Character Frequency Counting in Strings

Introduction: Character frequency counting is a common task in string manipulation, often encountered in various programming scenarios. In this tutorial, we’ll explore an efficient approach to calculate the frequency of each character from ‘a’ to ‘z’ in a given string ‘S’, using Python programming. We’ll delve into the algorithmic insights and analyze the time complexity … Read more