This article discusses the common interview problem of locating a missing ID in a sequential list, explains both sum‑based and XOR‑based algorithms, provides Java implementations, and shares practical tips for handling large data sets and avoiding pitfalls.
This tutorial explains how to exchange the values of two Java variables without using a temporary variable, covering three techniques—arithmetic addition/subtraction, multiplication/division, and bitwise XOR—along with complete code examples, step‑by‑step explanations, output results, and discussion of each method’s advantages, limitations, and appropriate use cases.
This article explains how to identify the single non‑repeating integer in a list where every other number appears twice, using an O(n) time and O(1) space XOR‑based algorithm, complete with Go code, step‑by‑step analysis, complexity discussion, and UML activity diagram.
This article introduces the XOR (exclusive OR) operation, explains binary representation of numbers, demonstrates how XOR can swap two integer values without a temporary variable, and provides a concise C code example illustrating the technique.
This article reviews several practical algorithm tricks—including using n&(n‑1) to clear the lowest set bit, counting bits, converting numbers, applying double‑pointer methods to linked lists and sorted arrays, and leveraging XOR properties—to simplify typical interview coding problems.
Learn to build a simple file encryption tool in Python by leveraging XOR operations and the secrets module to generate random keys, with step‑by‑step code for encrypting, decrypting, and handling text files securely.
This article explains how to construct a multi‑layer perceptron that implements XOR and arbitrary n‑bit Boolean functions, detailing the hidden‑node count for single‑ and multi‑layer designs and the minimal number of network layers needed.
