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  2. Penney's game - Wikipedia

    en.wikipedia.org/wiki/Penney's_game

    As this card-based version is quite similar to multiple repetitions of the original coin game, the second player's advantage is greatly amplified. The probabilities are slightly different because the odds for each flip of a coin are independent while the odds of drawing a red or black card each time is dependent on previous draws. Note that HHT ...

  3. Maze generation algorithm - Wikipedia

    en.wikipedia.org/wiki/Maze_generation_algorithm

    To create a binary tree maze, for each cell flip a coin to decide whether to add a passage leading up or left. Always pick the same direction for cells on the boundary, and the result will be a valid simply connected maze that looks like a binary tree, with the upper left corner its root. As with Sidewinder, the binary tree maze has no dead ...

  4. Random binary tree - Wikipedia

    en.wikipedia.org/wiki/Random_binary_tree

    Then, it continues recursively using the same process in the left and right subtrees. If is chosen uniformly at random in the interval, the result is the same as the random binary search tree generated by a random permutation of the nodes, as any node is equally likely to be chosen as root. However, this formulation allows other distributions ...

  5. Category:Coin flipping - Wikipedia

    en.wikipedia.org/wiki/Category:Coin_flipping

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  6. Coin flipping - Wikipedia

    en.wikipedia.org/wiki/Coin_flipping

    To choose two out of three, three coins are flipped, and if two coins come up the same and one different, the different one loses (is out), leaving two players. To choose one out of three, the previous is either reversed (the odd coin out is the winner) or a regular two-way coin flip between the two remaining players can decide. The three-way ...

  7. Entropy (information theory) - Wikipedia

    en.wikipedia.org/wiki/Entropy_(information_theory)

    Entropy Η(X) (i.e. the expected surprisal) of a coin flip, measured in bits, graphed versus the bias of the coin Pr(X = 1), where X = 1 represents a result of heads. [ 10 ] : 14–15 Here, the entropy is at most 1 bit, and to communicate the outcome of a coin flip (2 possible values) will require an average of at most 1 bit (exactly 1 bit for ...

  8. Block cipher - Wikipedia

    en.wikipedia.org/wiki/Block_cipher

    The person running the game flips a coin. If the coin lands on heads, he chooses a random key K and defines the function f = E K. If the coin lands on tails, he chooses a random permutation π on the set of n-bit strings and defines the function f = π. The attacker chooses an n-bit string X, and the person running the game tells him the value ...

  9. Quantum coin flipping - Wikipedia

    en.wikipedia.org/wiki/Quantum_coin_flipping

    The problem of them agreeing on a random bit by exchanging messages over this channel, without relying on any trusted third party, is called the coin flipping problem in cryptography. [1] Quantum coin flipping uses the principles of quantum mechanics to encrypt messages for secure communication.