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Implementing Custom Iterators and IterablesWhen processing large datasets or fetching data from remote APIs, loading all data into memory at once is inefficient. Instead, a lazy-evaluation approach where data is fetched item-by-item is preferred. This can be achieved by implementing the iterator protocol. The following example defines a custom ...

Stack and Queue Fundamentals Stacks and queues share the trait that insertion and deletion occur solely at their endpoints. Typical stack storage models are sequential arrays and linked lists. A stack exhibits last-in-first-out behavior. Linked lists lack random access; elemants must be traversed sequentially. Linked representation simplifies ...

Queue Implementation in C Using Linked Lists A queue is a fundamental data structure that follows the First-In-First-Out (FIFO) principle. This article presents a complete implementation of a queue using linked lists in C. Header File - Queue.h The header file contains function declarations and structure definitions for our queue implementat ...

Introduction to LFU Caching LFU (Least Frequently Used) is a caching algorithm that removes the least frequently accessed items when the cache reaches its capacity. Unlike LRU (Least Recently Used), which considers only recency, LFU prioritizes access frequency. Comparison of LFU and LRU Consider a cache with capacity 3 and the following access ...

Algorithm OverviewQuick Sort, often referred to as Hoare Sort, operates on a divide-and-conquer principle similar to the pre-order traversal of a binary tree. The core objective is to place a selected pivot element into its final sorted position while ensuring all elements to its left are smaller and all elements to its right are larger. This p ...

Understanding Python Slicing with [::-1] for Reversal Python's slicing syntax offers a versatile way to manipulate sequences like strings, lists, and tuples. The general format for slicing is sequence[start:end:step]. A particularly common and powerful application is reversing a sequence using [::-1]. When you omit start and end, Python assumes ...

Introduction too Linear Data Structures A linear data structure is a finite sequence of elements with similar properties. This fundamental structure finds widespread application in practice, with common implementations including sequential lists, linked lists, stacks, queues, and strings. Logically, the structure is linear, representing a conti ...

Python's dictionaries and sets offer significant performance advantages over lists and tuples, particularly for operations like lookup, insertion, and deletion, which are typically performed in constant time complexity. Sets are conceptually similar to dictionaries, with the key distinction being thier lack of key-value pairs. They represent co ...

Deletion in ArrayList relies on shifting underlying array elements and does not trigger capacity reduction. The internal array maintains its length; only the logical size decreases.Index-Based DeletionWhen removing an element by its position, the underlying array must shift subsequent elements to fill the gap.public T removeByPosition(int pos) ...

Sorting Fundamentals Sorting is the process of arranging a sequence of records in either ascending or descending order based on one or more specified keys. Stability: A sorting algorithm is considered stable if, for records with identical keys, their relative order remains unchanged after sorting. If the input has r[i] = r[j] with i < j, sta ...