class Node: def __init__(self, data): self.data = data self.next = None class LinkedList: def __init__(self): self.head = Node("head") self.last = self.head self.numData = 0 self.sorted = False def append(self, data): newNode = Node(data) self.last.next = newNode self.last = newNode self.numData += 1 self.sorted = False def slice(self, idx1, idx2): assert idx1 >= 1 and idx2 = idx1 - 1 and i < id..