DSA · Theory

Huffman encoding

Theory

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Meera only reaches for Huffman encoding when a Huffman encoding dry-run has to stay correct in a viva board.

For Huffman encoding, Big-O is in play. Don’t blame it until you have traced a Huffman encoding dry-run.

Without Huffman encoding, a viva board gets messy and a Huffman encoding dry-run is hard to trust.

Use Huffman encoding when a Huffman encoding dry-run must stay clear. If a simpler DSA step works, use that instead.

Huffman encoding trap — copy-pasting Huffman encoding without a dry-run. Meera loses marks for that every viva.

After Huffman encoding, Meera should still remember copy-pasting Huffman encoding without a dry-run.

Close Huffman encoding with: “If I skip it, a Huffman encoding dry-run goes wrong like this: copy-pasting Huffman encoding without a dry-run.”

Exam tip

Say Huffman encoding in one breath, then one Huffman encoding step Meera can write from memory, then copy-pasting Huffman encoding without a dry-run.

# Huffman encoding
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Huffman encoding: dry-run [4, 1, 3]. Say the list after one step.

DefHuffman encoding — Meera uses it for a Huffman encoding dry-run in a viva board.
RuleHuffman encoding → one Huffman encoding step Meera can write from memory.
RememberHuffman encoding + Big-O (a viva board).
UseHuffman encoding in a viva board (a Huffman encoding dry-run).
TrapHuffman encoding — copy-pasting Huffman encoding without a dry-run.
ExHuffman encoding → a Huffman encoding dry-run.