Jan 19, 2026

Huffman Decoder


Huffman decoder is used for data compression.

How the Decoder Works (Educational Steps)
  1. The Tree Search: In a Huffman tree, we start at the Root.
  2. The Binary Path:
    • If the bit is 0, we move to the Left child.
    • If the bit is 1, we move to the Right child.
  3. The Leaf Node: When we reach a "Leaf" (a node with a letter), we record that letter and jump back to the Root to start the next letter.
  4. Efficiency: Because no code is a prefix of another (Prefix Property), the decoder always knows exactly when a letter ends. 
Example for your Blog Post:
  • Map: A:0, B:10, C:110, D:111
  • Encoded String: 010110111
  • Decoding Process:
    • 0 → A
    • 10 → B
    • 110 → C
    • 111 → D
  • Result: ABCD

Decoder: Huffman Coding 📟

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