tasks a-s

Task/Run-length-encoding/Python/run-length-encoding-1.py

@@ -0,0 +1,29 @@
+def encode(input_string):
+    count = 1
+    prev = ''
+    lst = []
+    for character in input_string:
+        if character != prev:
+            if prev:
+                entry = (prev,count)
+                lst.append(entry)
+                #print lst
+            count = 1
+            prev = character
+        else:
+            count += 1
+    else:
+        entry = (character,count)
+        lst.append(entry)
+    return lst
+
+
+def decode(lst):
+    q = ""
+    for character, count in lst:
+        q += character * count
+    return q
+
+#Method call
+encode("aaaaahhhhhhmmmmmmmuiiiiiiiaaaaaa")
+decode([('a', 5), ('h', 6), ('m', 7), ('u', 1), ('i', 7), ('a', 6)])