[3] lab_1 + bst functions

GutovVM/docs/data/lab_1_data/1.py

@@ -98,6 +98,8 @@ print('\ntest_end\n\n')
 
 
 
+#HashTablePhoneBook
+
 print("\nHash Table\n")
 
 size = 8
@@ -109,6 +111,7 @@ def index(name,size):
 def ht_insert(buckets, name, phone):
     ind = index(name, size)
     buckets[ind] = ll_insert(buckets[ind], name, phone)
+    return buckets
 
 def ht_find(buckets, name):
     ind = index(name, size)
@@ -117,6 +120,7 @@ def ht_find(buckets, name):
 def ht_delete(buckets, name):
     ind = index(name, size)
     buckets[ind] = ll_delete(buckets[ind], name)
+    return buckets
 
 def ht_list_all(buckets):
     res = []
@@ -134,7 +138,7 @@ print("\nht_insert test\n")
 
 print(buckets)
 for i in range(len(test_names)):
-    ht_insert(buckets, test_names[i], test_phones[i])
+    buckets = ht_insert(buckets, test_names[i], test_phones[i])
     print(buckets)
 
 print("\ntest end\n\n")
@@ -153,7 +157,7 @@ print('ht_delete test\n')
 test_names = ['Nagibator3000','Nagibator3000','Loshped','Ermola']
 
 for name in test_names:
-    ht_delete(buckets, name)
+    buckets = ht_delete(buckets, name)
     print(buckets)
 
 print('\ntest_end\n\n')
@@ -163,3 +167,129 @@ print('ht_list_all test\n')
 print(ht_list_all(buckets))
 
 print('\ntest_end\n\n')
+
+
+
+#BinarySearchTree
+
+root = None
+
+def bst_insert(root, name, phone):
+    
+    if root == None:
+        return {'name': name, 'phone': phone, 'left': None, 'right': None}
+    
+    elif name == root['name']:
+        root['phone'] = phone
+        return root
+    elif hash(name) < hash(root['name']):
+        root['left'] = bst_insert(root['left'], name, phone)
+        return root
+    else:
+        root['right'] = bst_insert(root['right'], name, phone)
+        return root
+
+
+def bst_find(root, name):
+    
+    if root == None:
+        return None
+    
+    elif name == root['name']:
+        return root['phone']
+    
+    elif hash(name) < hash(root['name']):
+        return bst_find(root['left'],name)
+    else:
+        return bst_find(root['right'],name)
+    
+    
+def bst_delete(root, name):
+
+    if root is None:
+        return None      
+    elif name == root['name']:
+        curr = root['left']
+        if curr is not None:
+            oldcurr = root
+            while curr['right'] is not None:
+                oldcurr,curr = curr,curr['right']
+            
+            if oldcurr == root:
+                root['left'] = curr['left']
+            
+            else:
+                oldcurr['right'] = curr['right']
+                
+            curr['left'],curr['right'] = root['left'],root['right']
+            return curr
+            
+        curr = root['right']
+        if curr is not None:
+            oldcurr = root
+            while curr['left'] is not None:
+                oldcurr,curr = curr,curr['left']
+            
+            if oldcurr == root:
+                root['right'] = curr['right']
+            
+            else:
+                oldcurr['left'] = curr['left']
+                
+            curr['left'],curr['right'] = root['left'],root['right']
+            return curr
+            
+        return None
+            
+    elif hash(name) < hash(root['name']):
+        root['left'] = bst_delete(root['left'],name)
+        return root
+    else:
+        root['right'] = bst_delete(root['right'],name)
+        return root
+
+
+def bst_list_all(root):
+    
+    if root is None:
+        return []
+    
+    return bst_list_all(root['left']) + [(root['name'],root['phone'])] + bst_list_all(root['right'])
+
+
+test_names = ['Andrey', 'Ivan', 'Andrey', 'Igor', 'Nagibator3000', 'Sberbank','Loshped']
+test_phones = ['7-234-246','6-352-095','5-257-098','1-374-098','9-387-098','5-135-357','0-000-000']
+
+print("\nbst_insert test\n")
+
+print(root)
+for i in range(len(test_names)):
+    root = bst_insert(root, test_names[i], test_phones[i])
+    print(root)
+
+print("\ntest end\n\n")
+
+print("bst_find test\n")
+
+test_names = ["Ivan", "Andrey", "Sberbank", "Nagibator3000","Ermola"]
+
+for name in test_names:
+    print(bst_find(root, name))
+
+print("\ntest end\n\n")
+
+print('bst_delete test\n')
+
+test_names = ['Nagibator3000','Nagibator3000','Andrey','Ermola']
+
+for name in test_names:
+    root = bst_delete(root, name)
+    print(root)
+
+print('\ntest_end\n\n')
+
+print('bst_list_all test\n')
+
+print(bst_list_all(root))
+
+print('\ntest_end\n\n')

GutovVM/docs/data/lab_1_data/1backup23041020.py

@@ -0,0 +1,165 @@
+#LinkedListPhoneBook
+
+head = None #!!!!!!!!!!!!!!
+
+print("\nLinked list\n")
+
+def ll_insert(head, name, phone):
+        
+    curr = head
+        
+    while curr is not None:
+        if curr['name'] == name:
+            curr['phone'] = phone
+            return head
+        elif curr['next'] == None:
+            curr['next'] = {'name' : name, 'phone' : phone, 'next' : None}
+            return head
+        curr = curr['next']
+    
+    return {'name' : name, 'phone' : phone, 'next' : None}
+
+
+test_names = ['Andrey', 'Ivan', 'Andrey', 'Igor', 'Nagibator3000', 'Sberbank','Loshped']
+test_phones = ['7-234-246','6-352-095','5-257-098','1-374-098','9-387-098','5-135-357','0-000-000']
+
+print("\nll_insert test\n")
+
+for i in range(len(test_names)):
+    head = ll_insert(head, test_names[i], test_phones[i])
+    print(head)
+
+print("\ntest end\n\n")
+
+def ll_find(head, name):
+
+    curr = head
+    while curr is not None:
+        if curr['name'] == name:
+            return curr['phone']
+        curr = curr['next']
+    
+    return None
+
+print('ll_find test\n')
+
+test_names = ["Ivan", "Andrey", "Sberbank", "Nagibator3000","Ermola"]
+
+for name in test_names:
+    print(ll_find(head, name))
+
+print('\ntest_end\n\n')
+
+def ll_delete(head, name):
+    
+    if head is not None:
+        
+        if head['name'] == name:
+            return head['next']
+        
+        old_curr = head
+        curr = head['next']
+        
+        while curr is not None:
+            if curr['name'] == name:
+                old_curr['next'] = curr['next']
+                break
+            old_curr, curr = curr, curr['next']
+        
+    return head
+
+print('ll_delete test\n')
+
+test_names = ['Nagibator3000','Nagibator3000','Loshped','Ermola']
+
+for name in test_names:
+    head = ll_delete(head, name)
+    print(head)
+
+
+print('\ntest_end\n\n')
+
+def ll_list_all(head):
+    
+    res = []
+    curr = head
+    
+    while curr is not None:
+        res += [(curr['name'],curr['phone'])]
+        curr = curr['next']
+        
+    return sorted(res)
+
+print('ll_list_all test\n')
+
+print(ll_list_all(head))
+
+print('\ntest_end\n\n')
+
+
+
+print("\nHash Table\n")
+
+size = 8
+buckets = [None] * size
+
+def index(name,size):
+    return hash(name) % size
+
+def ht_insert(buckets, name, phone):
+    ind = index(name, size)
+    buckets[ind] = ll_insert(buckets[ind], name, phone)
+
+def ht_find(buckets, name):
+    ind = index(name, size)
+    return ll_find(buckets[ind], name)
+
+def ht_delete(buckets, name):
+    ind = index(name, size)
+    buckets[ind] = ll_delete(buckets[ind], name)
+
+def ht_list_all(buckets):
+    res = []
+    for head in buckets:        
+        curr = head       
+        while curr is not None:
+            res += [(curr['name'],curr['phone'])]
+            curr = curr['next']   
+    return sorted(res)
+
+test_names = ['Andrey', 'Ivan', 'Andrey', 'Igor', 'Nagibator3000', 'Sberbank','Loshped']
+test_phones = ['7-234-246','6-352-095','5-257-098','1-374-098','9-387-098','5-135-357','0-000-000']
+
+print("\nht_insert test\n")
+
+print(buckets)
+for i in range(len(test_names)):
+    ht_insert(buckets, test_names[i], test_phones[i])
+    print(buckets)
+
+print("\ntest end\n\n")
+
+print("ht_find test\n")
+
+test_names = ["Ivan", "Andrey", "Sberbank", "Nagibator3000","Ermola"]
+
+for name in test_names:
+    print(ht_find(buckets, name))
+
+print("\ntest end\n\n")
+
+print('ht_delete test\n')
+
+test_names = ['Nagibator3000','Nagibator3000','Loshped','Ermola']
+
+for name in test_names:
+    ht_delete(buckets, name)
+    print(buckets)
+
+print('\ntest_end\n\n')
+
+print('ht_list_all test\n')
+
+print(ht_list_all(buckets))
+
+print('\ntest_end\n\n')