Write a program to implement Stacks. class Stack:     def __init__(self):         self.stack = []     def push(self, item):         "...

 def selection_sort(arr):     """     Sorts a list of elements using the selection sort algorithm.     """    ...

 Write a python program to implement Queues. from collections import deque class Queue:     def __init__(self):         self.queue = deque()...

 #include <stdio.h> #include <string.h> // Example 1: Days of the week (default values: 0, 1, 2, ...) enum Days {     SUNDAY,   ...