organization in the src structure, modification of README

src/EXTRA_INTERVIEW_PROBLEMS/abstract_strucutres/HashTable.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+
+__author__ = "bt3"
+
+
+class HashTable(object):
+    def __init__(self, slots=10):
+        self.slots = slots
+        self.table = []
+        self.__create_table()
+
+    def __hash_key(self, value):
+        return hash(value)%self.slots
+
+    def __create_table(self):
+        for i in range(self.slots):
+            self.table.append([])
+
+    def add_item(self, value):
+        key = self.__hash_key(value)
+        self.table[key].append(value)
+
+    def print_table(self):
+        for key in range(len(self.table)):
+            print "Key is %s, value is %s." %(key, self.table[key])
+
+
+
+if __name__ == '__main__':
+    dic = HashTable(5)
+    for i in range(1, 40, 2):
+        dic.add_item(i)
+
+    dic.print_table()