From 31b3497a753904d5a894909adcca2071ba01694d Mon Sep 17 00:00:00 2001
From: Anna Yasenova <yasenova2013@gmail.com>
Date: Tue, 9 Jan 2018 23:42:49 +0200
Subject: [PATCH] Python examples.

---
 Python/1-simple.py  | 23 +++++++++++++
 Python/2-class.py   | 10 ++++++
 Python/2-closure.py |  7 ++++
 Python/3-sort.py    | 82 +++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 122 insertions(+)
 create mode 100644 Python/1-simple.py
 create mode 100644 Python/2-class.py
 create mode 100644 Python/2-closure.py
 create mode 100644 Python/3-sort.py

diff --git a/Python/1-simple.py b/Python/1-simple.py
new file mode 100644
index 0000000..31bfdc9
--- /dev/null
+++ b/Python/1-simple.py
@@ -0,0 +1,23 @@
+class Accumulator(object):
+    '''
+    __call__() allows the class instance to be called as a function
+    '''
+    def __init__(self, number=0):
+        self.number = number
+    def __call__(self, x):
+        self.number += x
+        return self.number
+
+
+item = Accumulator(1)
+
+#remember and add
+print(item(5)) # 6
+
+print(item(7)) # 13
+
+print(item(6)) # 19
+
+# a bit more complex. 
+# 19 + 4 = 23, 23 + 23 = 46 
+print(item(item(4))) # 46
\ No newline at end of file
diff --git a/Python/2-class.py b/Python/2-class.py
new file mode 100644
index 0000000..c19a8dd
--- /dev/null
+++ b/Python/2-class.py
@@ -0,0 +1,10 @@
+class Strip:
+
+	def __init__(self, chars):
+		self.chars = chars
+
+	def __call__(self, string):
+		return string.strip(self.chars)
+
+item = Strip('!?.,:;')
+print(item.__call__(';!?First Second Third;:.'))
\ No newline at end of file
diff --git a/Python/2-closure.py b/Python/2-closure.py
new file mode 100644
index 0000000..d3bf244
--- /dev/null
+++ b/Python/2-closure.py
@@ -0,0 +1,7 @@
+def createStrip(chars):
+	def stripFunc(string):
+		return string.strip(chars)
+	return stripFunc
+
+myStrip = createStrip('!?.,:;')
+print(myStrip(';!?First Second Third;:.')) # First Second Third
\ No newline at end of file
diff --git a/Python/3-sort.py b/Python/3-sort.py
new file mode 100644
index 0000000..ae86936
--- /dev/null
+++ b/Python/3-sort.py
@@ -0,0 +1,82 @@
+class Functor(object):
+
+    def __init__(self):
+        pass
+    
+    def __call__(self, x) :
+        x_first = x[0]
+        if type(x_first) is int:
+            return self. __mergeSort(x)
+        if type(x_first) is float:
+            return self. __heapSort(x)
+        else:
+            return self.__noSort(x) 
+ 
+    def __mergeSort(self, lst):
+        print("Data is Merge sorted")
+        result = []
+        if len(lst) < 20:
+            return sorted(lst)
+        mid = int(len(lst) / 2)
+        y = self.__mergeSort(lst[:mid])
+        z = self.__mergeSort(lst[mid:])
+        i = 0
+        j = 0
+        while i < len(y) and j < len(z):
+            if y[i] > z[j]:
+                result.append(z[j])
+                j += 1
+            else:
+                result.append(y[i])
+                i += 1
+        result += y[i:]
+        result += z[j:]
+        return result
+    
+    def __heapSort(self, x):
+               
+        def swap(lst,i, j):                    
+            lst[i], lst[j] = lst[j], lst[i] 
+        
+        def heapify(lst, end, pos):   
+            l = 2 * pos + 1  
+            r = 2 * (pos + 1)   
+            max = pos   
+            if l < end and lst[pos] < lst[l]:   
+                max = l   
+            if r < end and lst[max] < lst[r]:   
+                max = r   
+            if max != pos:   
+                swap(lst, pos, max)   
+                heapify(lst, end, max)   
+
+        def heap_sort(lst):     
+            end = len(lst)   
+            start = end // 2 - 1
+            for i in range(start, -1, -1):   
+                heapify(lst, end, i)   
+            for i in range(end-1, 0, -1):   
+                swap(lst, i, 0)   
+                heapify(lst, i, 0)
+        
+        print("Data is Heap sorted")
+        heap_sort(x)
+        
+        return x
+
+    def __noSort(self, lst):
+        print("Data isn't sorted")
+        return lst
+
+class Run(object):
+    def __init__(self):
+        self.sort = Functor()
+     
+    def mainMeth(self, x):
+        return self.sort(x)
+ 
+start = Run()
+
+print(start.mainMeth([5, 4, 6, 0, -6, 8])) # Mergesort 
+print(start.mainMeth([4.256, 2.23, 3.45, 5.65])) # heapsort
+print(start.mainMeth(['a','m', 'r', 's','b','q'])) # without sort
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