Posts by Tag

Algorithms

Floodfill

less than 1 minute read

Floodfill (Recursive)

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USACO

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C++

Floodfill

less than 1 minute read

Floodfill (Recursive)

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VIDEO

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Python

Mnemonic Generation (BIP39) Algorithm

2 minute read

Mnemonic Generation (BIP39) Algorithm Mnemonic a tool that helps you remember an idea or phrase with a pattern of letters. This article explains the Mnemonic...

Simple Substitution Cipher

less than 1 minute read

Simple Substitution Cipher Simple Substitution Cipher differs from Caesar Cipher in that the cipher alphabet is not simply shifted, it uses a look up table (...

Rail-fence Cipher

1 minute read

Rail-fence Cipher The rail fence cipher is a very simple cipher. It transposes the plaintext to form the cipher text. It can be combined with other ciphers, ...

Caesar Cipher

less than 1 minute read

Caesar Cipher In cryptography, a Caesar cipher is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in whi...

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Dynamic Programming

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Java

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USACO Silver

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USACO Gold

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USACO Bronze

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Backtracking

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Finite Automata

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Math

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Game

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Cryptography

Mnemonic Generation (BIP39) Algorithm

2 minute read

Mnemonic Generation (BIP39) Algorithm Mnemonic a tool that helps you remember an idea or phrase with a pattern of letters. This article explains the Mnemonic...

Simple Substitution Cipher

less than 1 minute read

Simple Substitution Cipher Simple Substitution Cipher differs from Caesar Cipher in that the cipher alphabet is not simply shifted, it uses a look up table (...

Rail-fence Cipher

1 minute read

Rail-fence Cipher The rail fence cipher is a very simple cipher. It transposes the plaintext to form the cipher text. It can be combined with other ciphers, ...

Caesar Cipher

less than 1 minute read

Caesar Cipher In cryptography, a Caesar cipher is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in whi...

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Graph

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Knapsack

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Euler

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Physics

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Monotonous Stack

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Two Pointers

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DFS

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BFS

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Greedy

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Tree

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PrefixSum

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BiPartite

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Multiple Knapsack

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Interval DP

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Sliding Window

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DP on a Tree

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DP on digits

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State Compression DP

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Segment Tree

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Bronze

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Recursion

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Sorting

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Coordinate Compression

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SPFA

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Combinatorics

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