organization in the src structure, modification of README

README.md

@@ -11,7 +11,7 @@ This repository contains a comprehensive study on Algorithms & Data Structures i
 
 src/
 
-├── abstract_structures
+└── abstract_structures
 
     ├── heap
 
@@ -21,33 +21,19 @@ src/
 
     └── stacks
 
-├── builtin_structures
-
-    ├── arrays_and_strings
+└── builtin_structures
 
     ├── dicts
 
-    ├── lists
+    ├── lists_and_strings
 
     ├── numbers
 
     ├── sets
 
-    ├── strings
-
     └── tuples
 
-├── graphs_and_trees
-
-    ├── trees
-
-├── programming_paradigms
-
-    ├── dynamic_programming
-
-    ├── modules
-
-    └── oop
+└── trees
 
 └── searching_and_sorting
 
@@ -57,6 +43,8 @@ src/
 
 └── Extra Interview Problems
 
+└── USEFUL
+
 
 ----
 ## Installation

src/USEFUL/basic_examples/example_doctest.py

@@ -1,5 +1,9 @@
+#!/usr/bin/python
+
+__author__ = "bt3"
+
 '''
-The doctest module automatically runs any statement begining with >>> 
+The doctest module automatically runs any statement beginning with >>>
 and compares the following line with the output from the interpreter.
 
 >>> 1 == 1

src/USEFUL/basic_examples/example_time.py

@@ -1,11 +1,12 @@
-#!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
+#!/usr/bin/python
+
+__author__ = "bt3"
+
+''' a simple example of how to time a function '''
 
 import time
 
 def sumOfN2(n):
-    ''' a simple example of how to time a function '''
     start = time.time()
     theSum = 0
     for i in range(1,n+1):

src/USEFUL/dynamic_programming/memo.py

@@ -1,6 +1,6 @@
 #!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
+
+__author__ = "bt3"
 
 
 from functools import wraps

src/USEFUL/dynamic_programming/memoized_longest_inc_subseq.py

@@ -1,7 +1,6 @@
 #!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
 
+__author__ = "bt3"
 
 from itertools import combinations
 from bisect import bisect

src/USEFUL/useful_with_files/change_ext_file.py

@@ -1,6 +1,8 @@
-#!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
+#!/usr/bin/env python
+
+
+__author__ = "bt3"
+
 
 import os
 import sys

src/USEFUL/useful_with_files/count_unique_words_files.py

@@ -1,4 +1,8 @@
 #!/usr/bin/python
+
+__author__ = "bt3"
+
+
 import collections
 import string
 import sys

src/USEFUL/useful_with_files/count_unique_words_frequency.py

@@ -1,9 +1,14 @@
 #!/usr/bin/python
+
+__author__ = "bt3"
+
+
 import collections
 import sys
 
 def count_unique_word_freq():
-        return collections.Counter(sys.stdin.read().lower().split()).most_common(n)
+        return collections.Counter(\
+            sys.stdin.read().lower().split()).most_common(n)
 
 
 if __name__ == '__main__':

src/USEFUL/useful_with_files/grep_word_from_files.py

@@ -1,6 +1,7 @@
-#!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
+#!/usr/bin/env python
+
+
+__author__ = "bt3"
 
 import sys
 

src/USEFUL/useful_with_files/remove_blank_lines.py

@@ -1,6 +1,7 @@
-#!/usr/bin/python3
-# mari von steinkirch @2013
-# steinkirch at gmail
+#!/usr/bin/env python
+
+
+__author__ = "bt3"