#ALGO 0129 - The Magic of Compression? A Deep Dive into Huffman, LZW, RLE Algorithms!

追加: 2026-06-02

[00:00:00]The secret to sending hundreds of MB files in seconds.

[00:00:03]It's compression algorithms.

[00:00:05]Compression is a technology that reduces size by finding data redundancy.

[00:00:09]Shall we explore the three core algorithms?

[00:00:12]First, run-length encoding.

[00:00:14]It converts consecutive data into counts and values.

[00:00:17]A A A B B B becomes 5A3B.

[00:00:20]It's effective for images with many consecutive pixels.

[00:00:24]Second, Huffman coding.

[00:00:26]It varies the code length based on character frequency.

[00:00:29]Frequently used characters are converted to short bits, while rare ones to long bits, reducing overall size.

[00:00:34]Third, the LZW algorithm.

[00:00:37]It finds repeating patterns and creates a dictionary for compression.

[00:00:41]New patterns are registered in the dictionary and replaced by short numbers upon reappearance.

[00:00:45]It's key for GIFs and ZIPs.

[00:00:47]Thanks to these technologies, we can save storage space and enable fast transfers.

[00:00:52]Compression algorithms that lighten data.

[00:00:54]Discover more IT knowledge by subscribing.