tagged [random]
How to generate three random numbers, whose sum is 1?
How to generate three random numbers, whose sum is 1? I need to generate 3 random numbers, the amount of which is equal to 1. My implementation does not support uniform distribution. :(
- Modified
- 6 Apr at 09:8
Best Way to Generate Random Salt in C#?
Best Way to Generate Random Salt in C#? Question says it all, what is the best method of generating a random salt (to be used with a hash function) in C#?
- Modified
- 20 Jun at 18:27
Select random lines from a file
Select random lines from a file In a Bash script, I want to pick out N random lines from input file and output to another file. How can this be done?
- Modified
- 11 Apr at 05:24
C# Random.Next - never returns the upper bound?
C# Random.Next - never returns the upper bound? It never returns the 5 (but sometimes returns the 0.) Why? I thought these are just boundary values that can be returned. Thanks
shuffle (rearrange randomly) a List<string>
shuffle (rearrange randomly) a List I need to rearrange my List array, it has a non-determinable number of elements in it. Can somebody give me example of how i do this, thanks
Random number between 0 and 1?
Random number between 0 and 1? I want a random number between 0 and 1, like 0.3452. I used `random.randrange(0, 1)` but it is always 0 for me. What should I do?
Random shuffling of an array
Random shuffling of an array I need to randomly shuffle the following Array: Is there any function to do that?
How do I create a list of random numbers without duplicates?
How do I create a list of random numbers without duplicates? I tried using `random.randint(0, 100)`, but some numbers were the same. Is there a method/module to create a list unique random numbers?
Random number: 0 or 1
Random number: 0 or 1 Am I looking too far to see something as simple as pick a number: 0 or 1?
How to generate a random number with a specific amount of digits?
How to generate a random number with a specific amount of digits? Let's say I need a 3-digit number, so it would be something like:
How is a random number generated at runtime?
How is a random number generated at runtime? Since computers cannot pick random numbers(can they?) how is this random number actually generated. For example in C# we say, What happens inside?
- Modified
- 14 Dec at 15:29
How to generate a random string of a fixed length in Go?
How to generate a random string of a fixed length in Go? I want a random string of characters only (uppercase or lowercase), no numbers, in Go. What is the fastest and simplest way to do this?
Expand a random range from 1–5 to 1–7
Expand a random range from 1–5 to 1–7 Given a function which produces a random integer in the range 1 to 5, write a function which produces a random integer in the range 1 to 7.
Is there functionality to generate a random character in Java?
Is there functionality to generate a random character in Java? Does Java have any functionality to generate random characters or strings? Or must one simply pick a random integer and convert that inte...
How does C#'s random number generator work?
How does C#'s random number generator work? I was just wondering how the random number generator in C# works. I was also curious how I could make a program that generates random numbers from 1-100.
Unique random string generation
Unique random string generation I'd like to generate random unique strings like the ones being generated by MSDN library.([Error Object](http://msdn.microsoft.com/en-us/library/t9zk6eay.aspx)), for ex...
Getting random numbers from a list of integers
Getting random numbers from a list of integers If I have a list of integers: How would I get 3 random integers from that list?
Exclude values from Random.Range()?
Exclude values from Random.Range()? If you are using `Random.Range()` to generate values, is there any way to exclude some values within the range (for example: pick a number between 1 and 20, but not...
Select N random elements from a List<T> in C#
Select N random elements from a List in C# I need a quick algorithm to select 5 random elements from a generic list. For example, I'd like to get 5 random elements from a `List`.
- Modified
- 21 Jul at 12:27
How can I select random files from a directory in bash?
How can I select random files from a directory in bash? I have a directory with about 2000 files. How can I select a random sample of `N` files through using either a bash script or a list of piped co...
Shuffling a list of objects
Shuffling a list of objects How do I shuffle a list of objects? I tried [random.shuffle](https://docs.python.org/library/random.html#random.shuffle): But it outputs:
How can I generate random numbers in Python?
How can I generate random numbers in Python? Are there any built-in libraries in Python or Numpy to generate random numbers based on various common distributions, such as: - - - - And various others? ...
Sample random rows in dataframe
Sample random rows in dataframe I am struggling to find the appropriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Ca...
Random date in C#
Random date in C# I'm looking for some succinct, modern C# code to generate a random date between Jan 1 1995 and the current date. I'm thinking some solution that utilizes Enumerable.Range somehow may...
How to get random value out of an array?
How to get random value out of an array? I have an array called `$ran = array(1,2,3,4);` I need to get a random value out of this array and store it in a variable, how can I do this?