解释此c＃方法的代码如何工作以及每个部分在做什么

Question

this is a method in c# that is used in the program to makes a 10-digit number. my question is that how does this work exactly? what is the code doing?

long LongRandom(long min,long max,Random rand)
        {
            long result = rand.Next((Int32)(min >> 32), (Int32)(max >> 32));
            result = (result << 32);
            result = result | (long)rand.Next((Int32)min, (Int32)max);
            return result;
        }

Answer 1

Just consider the following analogy with decimals (for simplicity, as we're not computers):

Let's say we have a random generator that can go from 0 to 999, and you want to generate a random number between two numbers in a range [0, 999.999] .

What this code does is take anything above 999 in your min and max , and generate a random number for thousands, then take anything below 1.000 in your min and max and generate a random number for units below a thousand, then add those values.

However, if you wanted to get a random number between say 20 and 1.080 using this method, you will never be able to get anything in the range [81, 1019] for example.

Also note that there's a problem with signed/unsigned values in your code (as stated by jdweng)