Adding to string processing

algorithms/string_processing/run_length_encoding.py

@@ -0,0 +1,45 @@
+# YouTube Link:
+
+"""
+Run-length encoding (RLE) is a very simple form of lossless data compression
+in which runs of data (that is, sequences in which the same data value occurs
+in many consecutive data elements) are stored as a single data value and count,
+rather than as the original run.
+
+Example:
+    WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW
+    With a run-length encoding (RLE) data compression algorithm applied to
+    the above hypothetical scan line, it can be rendered as follows:
+
+    12W1B12W3B24W1B14W
+    This can be interpreted as a sequence of twelve Ws, one B, twelve Ws,
+    three Bs, etc..,
+"""
+
+
+def run_length_encode(uncompressed_data):
+    """
+    Takes an uncompressed string of data and
+    returns the run-length encoded string.
+    """
+    compressed_data = ""
+    return compressed_data
+
+
+def run_length_decode(compressed_data):
+    """
+    Takes a run-length encoded compressed string
+    and returns the uncompressed decoded data.
+    """
+    uncompressed_data = ""
+    return uncompressed_data
+
+
+uncompressed_data = "aaaaahhhhhhmmmmmmmuiiiiiiiaaaaaa"
+
+# Expects: 
+compressed_data = run_length_encode(uncompressed_data)
+
+# Expects: "aaaaahhhhhhmmmmmmmuiiiiiiiaaaaaa"
+uncompressed_data = run_length_decode(compressed_data)
+