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Java Implementation of 99 Multiplication Table — Using For Loop and Recursion
Java

Java Implementation of 99 Multiplication Table — Using For Loop and Recursion

This article presents two Java implementations of the 99 multiplication table: a nested for loop and a recursive method. It compares both programming approaches, showing how to print the classic multiplication grid efficiently. Readers gain practical coding examples for loops and recursion in Java.

发布于 2024-12-28
Python Formatted Output (% and format Usage)
Python

Python Formatted Output (% and format Usage)

This article explains Python's formatted output methods, covering %-formatting for integers, floats, and strings, common format specifiers, and auxiliary width/precision controls. It details format() templates with positional, indexed, and keyword placeholders. Key caveats include round()'s .5 nearest-even behavior and floating-point inaccuracies such as round(2.675, 2) yielding 2.67. Readers gain practical knowledge for controlling string alignment, decimal precision, scientific notation, and multi-variable output accurately.

发布于 2024-12-28
[Study Notes] Trigonometric Functions (Sine, Cosine, Tangent)
Study Notes

[Study Notes] Trigonometric Functions (Sine, Cosine, Tangent)

The article details sine, cosine, and tangent functions, defining them via unit circle and right-triangle ratios. It covers key properties including periodicity, parity, range, and special values, plus essential identities such as Pythagorean, phase-shift, sum/difference, and double-angle formulas. Applications span physics, engineering, astronomy, and biology, emphasizing the functions’ role in modeling periodic phenomena.

发布于 2024-11-21

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