In C#programming, it is a common task to generate a random integer. So, how can we achieve it easily?
C# provides a powerful class, which is specifically used to generate random numbers. Although these numbers are called pseudo -random numbers, they are enough to meet the random needs of most application scenarios.
Random
Class contains a method called , allowing you to generate a random integer within the specified range. This method accepts two integer parameters: lower bounds (including) and upper bounds (excluding).
For example:
Random
Best Practice: Improve randomness Next
In order to maximize the randomness of random numbers, it is recommended to create a single
instance and reuse it in multiple operations. Repeating to create a new instance in a short time may lead to the same random number sequence, because the seeds are derived from the system clock.Random rnd = new Random(); int month = rnd.Next(1, 13); // 生成 1 到 12 之間的隨機數(shù) int dice = rnd.Next(1, 7); // 生成 1 到 6 之間的隨機數(shù) int card = rnd.Next(52); // 生成 0 到 51 之間的隨機數(shù)
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