![]() * Need to sort a number range 1-10 into a random order? Set range to 1-10, set to pick 10, say NO duplictes. Chose whether to allow duplicates or not. Need to be more focused and just need random numbers without the veneer of dice or coins? Specify the number range (can include negative numbers), specify how many numbers to pick. (Again, useful if you're flipping the Loves Me/Loves me Not coin 700 times). * Need to decide if they Loves Me/Loves Me Not.Īnd if one flip isn't definitive enough then you can flip your custom coin any number of times and we'll show the result of each flip and a summary of the result. * Need to decide if you're on Team Sharks or Team Jets? * Need to decide who is cleaning the fridge? * Need to decide if you're going for fancy French or hamburger? ![]() With Custom Coins you can specify what is on each side of the coin - no more relationship ending disagreements and confusion. For when you need to flip a coin to decide between 2 things but don't want to deal with the problem of remembering if Heads means "Tell the truth" or if it means "Tell a lie", particularly handy if there is more than one person who also has to agree that Heads means the same thing you think it means. The summary may be a bit useless for 3 coins but it's fantastic if you're demonstrating probability to your 8 year old niece by flipping 700 coins.Īnd there is Custom Coins. It will show the individual H/T for each coin and also a handy summary of how many Heads and how many Tails (e.g. There is the basic heads/tails flipper where you can choose the number of coins to flip. * Want your dice to embrace the dark side and include negative numbers and zero? We don't discriminate against the dark side. * Want to roll 400 one sided dice for kicks? Yep (and impress the kids by predicting the outcome before the roll). * Want to spice it up and roll seven 19 sided dice? No problem. * Want to be traditional and roll two 6 sided dice? Of course you can. You can roll dice - as many dice as you want, with any number of sides. No graphics, few colours, no beautiful design. ![]() ![]() This makes BLAKE2b better resemble a random oracle.Let's be clear - this app is possibly the least pretty app of its kind. That said, sometimes we do want different output lengths to appear unrelated, though, and other constructions such as BLAKE2b provide that, by hashing the length into the message too. In the case of SHAKE256, the input to the function can vary in length $\ell$ up to arbitrarily long messages in the case of ChaCha, the input length $\ell$ is always the nonce length, at most 128 with the remaining bits for a counter determining how many bits $n$ can have. ![]() The outcome of a sequence of coin flips can also be seen as a random variable: you can describe the former as an experiment that repeatedly takes samples of the outcomes of single coin flips. The outcome of a coin flip is a random variable. Mathematically, the concept we'd use to model coin flips is random variables. So a sequence of coin flips is not a PRG. Haskell)-one whose results depend exclusively on the value of its arguments, and not on the state of the program.Ĭoin flips clearly do not fit under that definition, because they're non-deterministic-calling the coin-flip "function" (really an imperative programming routine) twice with the same argument is supposed not to always produce the same result. In recent programming parlance, this is what people often call a pure function, like in pure functional programming languages (e.g. #Random coin flip generator#Boneh's definition of a pseudorandom generator stipulates that a PRG is a mathematical function-a mapping from an input domain to an output codomain such that the choice of argument value uniquely determines the result. ![]()
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