Shulou(Shulou.com)05/31 Report--

This article mainly explains "Java Grammar case Analysis". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "Java Grammar case Analysis".

First, public class TestDemo220427 {public static void main (String [] args) {/ / to find primes between 1m and 100 as an example: for (int I = 2bot I is changed to num = num > 1, move to the right unsigned, so that the high position will only make up 0, which is suitable for both positive and negative numbers.

Expansion: some people may ask, since you can move to the right, why not move to the left?

The answer is: it is possible to move to the left, but it is not recommended, and the efficiency is too low.

Public class TestDemo220427 {public static int getOnecount (int num) {int count = 0; for (int I = 0 (I = 0) < 32 (if) {if ((num & (1))

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