Random.Next方法
一、重载
- Next():返回一个非负随机整数
Random random= new Random();
Console.WriteLine("Generating 10 random numbers:");
for (int ctr = 1; ctr <= 10; ctr++)
{
int number = random.Next();
Console.WriteLine(number);
}
- Next(Int32):返回一个小于所指定最大值的非负随机整数
Random random= new Random();
Console.WriteLine("Generating 10 random numbers:");
for (int ctr = 1; ctr <= 10; ctr++)
{
int number = random.Next(10);
//生成的随机值小于10
Console.WriteLine(number);
}
- Next(Int32, Int32):返回在指定范围内的任意整数
Random random= new Random();
Console.WriteLine("Generating 10 random numbers:");
for (int ctr = 1; ctr <= 10; ctr++)
{
int number = random.Next(1,10);
//生成的随机值大于等于1小于10
Console.WriteLine(number);
}
Random.NextDouble方法
-
返回一个大于或等于 0.0 且小于 1.0 的随机浮点数
-
示例
Random random= new Random();
Console.WriteLine("生成10个大于或等于0.0且小于1.0的随机浮点数");
for (int ctr = 1; ctr <= 10; ctr++) {
double number = random.NextDouble();
Console.WriteLine(number);
}
//此方法返回的随机数的实际上限为0.99999999999999978
Random.NextBytes方法
- NextBytes(Byte[]):用随机数填充指定字节数组的元素
- 示例
Random random= new Random();
Byte[] b = new Byte[10];
random.NextBytes(b);
Console.WriteLine("The Random bytes are: ");
for (int i = 0; i <= b.GetUpperBound(0); i++)
Console.WriteLine("{0}: {1}", i, b[i]);
// 示例运行后结果为:
// The Random bytes are:
// 0: 131
// 1: 96
// 2: 226
// 3: 213
// 4: 176
// 5: 208
// 6: 99
// 7: 89
// 8: 226
// 9: 194
- 字节数组的每个元素都设置为一个大于或等于0且小于或等于 MaxValue的随机数