c# random number
Random rnd = new Random();
int number = rnd.Next(1, 10);
c# random number
Random rnd = new Random();
int number = rnd.Next(1, 10);
c# random
Random rnd = new Random();
int lowerBound = 10;
int upperBound = 11;
int[] range = new int[10];
for (int ctr = 1; ctr <= 1000000; ctr++) {
Double value = rnd.NextDouble() * (upperBound - lowerBound) + lowerBound;
range[(int) Math.Truncate((value - lowerBound) * 10)]++;
}
for (int ctr = 0; ctr <= 9; ctr++) {
Double lowerRange = 10 + ctr * .1;
Console.WriteLine("{0:N1} to {1:N1}: {2,8:N0} ({3,7:P2})",
lowerRange, lowerRange + .1, range[ctr],
range[ctr] / 1000000.0);
}
// The example displays output like the following:
// 10.0 to 10.1: 99,929 ( 9.99 %)
// 10.1 to 10.2: 100,189 (10.02 %)
// 10.2 to 10.3: 99,384 ( 9.94 %)
// 10.3 to 10.4: 100,240 (10.02 %)
// 10.4 to 10.5: 99,397 ( 9.94 %)
// 10.5 to 10.6: 100,580 (10.06 %)
// 10.6 to 10.7: 100,293 (10.03 %)
// 10.7 to 10.8: 100,135 (10.01 %)
// 10.8 to 10.9: 99,905 ( 9.99 %)
// 10.9 to 11.0: 99,948 ( 9.99 %)
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