School Commit Init

2024-08-31 12:07:21 +03:00
commit 0b130ee18c
2801 changed files with 4720552 additions and 0 deletions
@@ -0,0 +1,39 @@
+class Bag:
+    def __init__(self):
+        self.__elements = []
+    def add(self, e):
+        self.__elements.append(e)
+    def remove(self, e):
+        if e in self.__elements:
+            self.__elements.remove(e)
+            return True
+        return False
+    def search(self, e):
+        return e in self.__elements
+    def size(self):
+        return len(self.__elements)
+    def nrOccurrences(self, e):
+        return self.__elements.count(e)
+    def destroy(self):
+        del(self)
+    def iterator(self):
+        return BagIterator(self.__elements)
+
+
+class BagIterator:
+    def __init__(self, elements):
+        self.__elements = elements
+        self.__current = 0
+    def first(self):
+        self.__current = 0
+    def valid(self):
+        return self.__current < len(self.__elements)
+    def next(self):
+        if self.valid():
+            self.__current += 1
+    def getCurrent(self):
+        if self.valid():
+            return self.__elements[self.__current]
+        else:
+            raise ValueError("Invalid iterator position.")
+    
@@ -0,0 +1,46 @@
+from Bag import Bag, BagIterator
+
+def createIntBag():
+    intBag=Bag()
+    intBag.add(6)
+    intBag.add(11)
+    intBag.add(77)
+    intBag.add(7)
+    intBag.add(4)
+    intBag.add(6)
+    intBag.add(77)
+    intBag.add(6)
+    return intBag
+
+def createStringBag():
+    stringBag=Bag()
+    stringBag.add("data")
+    stringBag.add("structures")
+    stringBag.add("and")
+    stringBag.add("algorithms")
+    stringBag.add("data")
+    stringBag.add("data")
+    stringBag.add("algorithms")
+    return stringBag
+
+def printBag(bag):
+    it = bag.iterator()
+    while it.valid():
+        print(it.getCurrent())
+        it.next()
+    print("Over. Let's start again.")
+    it.first()
+    while it.valid():
+        print(it.getCurrent())
+        it.next()
+
+def main():
+    b1 = createIntBag()
+    printBag(b1)
+    print("No occurrences of 77: ", b1.nrOccurrences(77))
+    b2 = createStringBag()
+    printBag(b2)
+    print("No occurrences of 'data': ", b2.nrOccurrences("data"))
+
+if __name__ == "__main__":
+    main()