Php implementation of Russian multiplication instance, Russian multiplication instance _ PHP Tutorial

Php implements the Russian multiplication instance and the Russian multiplication instance. Example of php implementation of Russian multiplication. example of Russian multiplication this article describes how php implements Russian multiplication. Share it with you for your reference. The specific analysis is as follows: 1. Overview: php achieves Russian multiplication instances and Russian multiplication instances

This example describes how php implements Russian multiplication. Share it with you for your reference. The specific analysis is as follows:

I. Overview:

Russian multiplication is an algorithm used to calculate the multiplication of two numbers.
Example:
Computing 35*72
Process
35 72
17 144
8 288
4 576
2 1152
1 2304
For each row from top to bottom, if the number on the left is an odd number, the number on the right is taken out and accumulated.
72 + 144 + 2304 = 2520
The accumulated result 2520 is the product.

II. implementation code:

<? Phpfunction russian ($ m, $ n, $ res = 0) {(1 = ($ n & 1) & $ res + = $ m; $ m = $ m <1; $ n = $ n> 1; return $ n? Russian ($ m, $ n, $ res): $ res;} echo russian (7, 8 );

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Examples in this article describes how php implements Russian multiplication. Share it with you for your reference. The specific analysis is as follows: 1. Overview :...