Run Length Encoding
Run Length Encoding (RLE) is a simple form of lossless data compression that reduces the size of data by representing consecutive identical elements (runs) as a single data value and a count. It is particularly effective for data with many repeated values, such as simple graphics, text, or binary data. The algorithm works by scanning the input and encoding runs of the same symbol into a pair (count, value).
Developers should learn RLE for scenarios involving data compression where simplicity and speed are prioritized over high compression ratios, such as in embedded systems, basic image formats (e.g., BMP, PCX), or text processing with repetitive patterns. It is also useful as an educational tool to understand fundamental compression concepts before moving to more complex algorithms like Huffman coding or LZ77.