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Cognitive Technology Team
Cognitive Technology Team
Mar 23, 2025 · Fundamentals

Swapping Two Variables in Java Without a Temporary Variable

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.

ArithmeticBitwise OperationsJava
0 likes · 7 min read
Swapping Two Variables in Java Without a Temporary Variable
Full-Stack Internet Architecture
Full-Stack Internet Architecture
Sep 11, 2019 · Fundamentals

Common Algorithm Tricks: Bit Manipulation, Two‑Pointer Techniques, and XOR Applications

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.

AlgorithmBit ManipulationInterview
0 likes · 9 min read
Common Algorithm Tricks: Bit Manipulation, Two‑Pointer Techniques, and XOR Applications