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Python Articles
Page 15 of 854
Python Program to Implement a Stack
When it is required to implement a stack using Python, a stack class is created, and an instance of this class is created. Methods to push, pop elements are defined and the instance is used to call these methods.Below is a demonstration of the same −Exampleclass Stack_struct: def __init__(self): self.items = [] def check_empty(self): return self.items == [] def add_elements(self, my_data): self.items.append(my_data) def delete_elements(self): return self.items.pop() my_instance = Stack_struct() while True: print('Push ') print('Pop') print('Quit') my_input ...
Read MorePython Program to Find Nth Node in the Inorder Traversal of a Tree
When it is required to find the ‘n’th node using inorder traversal of a binary tree, a binary tree class is created with methods to set the root element, add elements to left or right, perform in order traversal and so on. An instance of the class is created, and it can be used to access the methods.Below is a demonstration of the same −Exampleclass BinaryTree_struct: def __init__(self, key=None): self.key = key self.left = None self.right = None def set_root(self, key): self.key = key ...
Read MoreCheck whether a number has consecutive 0’s in the given base or not using Python
When it is required to check if a number has consecutive zeroes of a specific base, a method is defined, that takes the number and base as parameters, and uses another method to return Yes or No depending on whether the base is present or not.Below is a demonstration of the same −Exampledef check_consecutive_zero(N, K): my_result = convert_to_base(N, K) if (check_n(my_result)): print("Yes") else: print("No") def convert_to_base(N, K): weight = 1 s = 0 while (N != 0): r = N % K ...
Read MorePython Program to Construct a Tree & Perform Insertion, Deletion, Display
When it is required to construct a binary tree, and perform operations such as inserting an element, deleting an element and displaying elements of the tree, a class is defined with methods in it. An instance of the class is defined and this is used to access the elements and perform operations.Below is a demonstration of the same −Exampleclass Tree_struct: def __init__(self, data=None, parent=None): self.key = data self.children = [] self.parent = parent def set_root(self, data): self.key = data def add_node(self, node): ...
Read MorePython program to print the elements of an array present on odd position
When it is required to print the elements of a list that is present in odd index/position, a loop can be used to iterate over the elements, and only check the odd positions in the list by specifying the step size as 2 in the range function.Below is a demonstration of the same −Examplemy_list = [31, 42, 13, 34, 85, 0, 99, 1, 3] print("The list is :") print(my_list) print("The elements in odd positions are : ") for i in range(1, len(my_list), 2): print(my_list[i])OutputThe list is : [31, 42, 13, 34, 85, 0, 99, 1, 3] The elements in ...
Read MorePython program to print the elements of an array present on even position
When it is required to print the elements of a list that are present at even index/position, a loop can be used to iterate over the elements, and only check the even positions in the list by specifying the step size as 2 in the range function.Below is a demonstration of the same −Examplemy_list = [31, 42, 13, 34, 85, 0, 99, 1, 3] print("The list is :") print(my_list) print("The elements in odd positions are : ") for i in range(0, len(my_list), 2): print(my_list[i])OutputThe list is : [31, 42, 13, 34, 85, 0, 99, 1, 3] The elements in ...
Read MorePython Program to Input a Number n and Compute n+nn+nnn
When it is required to take a number and compute a specific pattern, the value of n is taken from the user. Next, two variables are assigned this specific pattern and their sum is calculated.Below is a demonstration of the same −Examplemy_input = int(input("Enter a value for n...")) temp_val = str(my_input) t_1=temp_val+temp_val t_2=temp_val+temp_val+temp_val my_result = my_input+int(t_1)+int(t_2) print("The computed value is : ") print(my_result)OutputEnter a value for n...4 The computed value is : 492ExplanationAn input from the user is taken.It is converted into a string and assigned to a variable.The value of ‘n*n’ and the value of ‘n*n*n’ is calculated.Their sum ...
Read MorePython Program to Print all Numbers in a Range Divisible by a Given Number
When it is required to print all the elements in a given range that is divisible by a specific number, a simple for loop can be used.Below is a demonstration of the same −Examplelower_num = int(input("Enter lower range limit...")) upper_num = int(input("Enter upper range limit...")) div_num = int(input("Enter the number that should be divided by...")) for i in range(lower_num, upper_num+1): if(i%div_num==0): print(i)OutputEnter lower range limit...3 Enter upper range limit...8 Enter the number that should be divided by...2 4 6 8ExplanationThe upper and lower range of numbers is taken as input from the user.The number by which ...
Read MorePython Program to Read Two Numbers and Print Their Quotient and Remainder
When it is required to read two numbers and print the quotient and remainder when they are divided, the ‘//’ and ‘%’ operators can be used.Below is a demonstration of the same −Examplefirst_num = int(input("Enter the first number...")) second_num = int(input("Enter the second number...")) print("The first number is ") print(first_num) print("The second number is ") print(second_num) quotient_val = first_num//second_num remainder_val = first_num%second_num print("The quotient is :") print(quotient_val) print("The remainder is :") print(remainder_val)OutputEnter the first number...44 Enter the second number...56 The first number is 44 The second number is 56 The quotient is : 0 The remainder is : 44ExplanationThe ...
Read MorePython Program to Accept Three Digits and Print all Possible Combinations from the Digits
When it is required to print all possible combination of digits when the input is taken from the user, nested loop is used.Below is a demonstration of the same −Examplefirst_num = int(input("Enter the first number...")) second_num = int(input("Enter the second number...")) third_num = int(input("Enter the third number...")) my_list = [] print("The first number is ") print(first_num) print("The second number is ") print(second_num) print("The third number is ") print(third_num) my_list.append(first_num) my_list.append(second_num) my_list.append(third_num) for i in range(0, 3): for j in range(0, 3): for k in range(0, 3): if(i!=j&j!=k&k!=i): ...
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