Programming Articles - Page 1326 of 3366

When it is required to unpack a tuple of list, the 'reduce' method can be used. A tuple is an immutable data type. It means, values once defined can't be changed by accessing their index elements. If we try to change the elements, it results in an error. They are important contains since they ensure read-only access.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).A tuple of list contains multiple lists, which are enclosed in '(' and ')'.The 'reduce' method is used to apply a specific ... Read More

The binary search algorithm is the fastest algorithm to search for an element in a sorted array. It works by dividing the array into two halves and checking if the target element is in the left or right half, thus reducing the search space by half with each iteration. Binary Search Using Recursion The following are the steps to implement binary search using recursion: Define a binSearch() function that accepts the array, the left index, the right index, and the target that you want to search. Check if the ... Read More

To implement binary search without recursion, the program takes a sorted list and a key as input. It uses the Binary search method, which is an efficient way to find a specific item in a sorted list. It works by repeatedly dividing the list in half. This method works by first comparing the key with the middle element of the list. If the key matches the middle element, the search is successful, and the index is returned. If the key is less than the middle element, the search continues on the left subarray; if it's greater, the search shifts to ... Read More

When it is required to remove the matching tuples from two list of tuples, the list comprehension can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).A list of tuple basically contains tuples enclosed in a list.The list comprehension is a shorthand to iterate through the list and perform operations on it.Below is a demonstration for the same −ExampleLive Demomy_list_1 = [('Hi', 'there'), ('Jane', 'Hi'), ('how', 'are'), ('you', '!')] my_list_2 = [('Hi', 'there'), ('Hi', 'Jane')] print("The first list is : ") print(my_list_1) print("The second ... Read More

When it is required to sort the tuple based on the occurrence of the first element, the dict.fromkeys method can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).A list of tuple basically contains tuples enclosed in a list.The 'dict.fromkeys' method will return a dictionary with a specific key and a value.Below is a demonstration for the same −ExampleLive Demodef sort_on_occurence(my_lst):    my_dict = {}    for i, j in my_lst:       my_dict.setdefault(i, []).append(j)    return([(i, *dict.fromkeys(j), len(j))       for i, ... Read More

When it is required to remove the strings froma  tuple, the list comprehension and the 'type' method can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).A list of tuple basically contains tuples enclosed in a list.The list comprehension is a shorthand to iterate through the list and perform operations on it.The 'type' method returns the class of the iterable passed to it as an argument.Below is a demonstration for the same −ExampleLive Demomy_list = [('Hi', 45, 67), ('There', 45, 32), ('Jane', 59, 13)] ... Read More

When it is required to get the summation of a list of tuple, the list comprehension and the 'sum' method can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on).A list of tuple basically contains tuples enclosed in a list.The list comprehension is a shorthand to iterate through the list and perform operations on it.The 'sum' method is used to add the elements of an iterable, where the iterable is passed as an argument to the method.Below is a demonstration for the same −ExampleLive Demomy_list ... Read More

When it is required to find the grouped summation of a list of tuple, the 'Counter' method and the '+' operator need to be used.The 'Counter' is a sub-class that helps count hashable objects, i.e it creates a hash table on its own (of an iterable- like a list, tuple, and so on) when it is invoked.It returns an itertool for all of the elements with a non-zero value as the count.The '+' operator can be used to add numeric values or concatenate strings.Below is a demonstration for the same −ExampleLive Demofrom collections import Counter my_list_1 = [('Hi', 14), ... Read More

When it is required to reverse each tuple in a list of tuples, the negative step slicing can be used.A list can be used to store heterogeneous values (i.e data of any data type like integer, floating point, strings, and so on). A list of tuple basically contains tuples enclosed in a list.In negative slicing, the index is accessed using negative numbers, instead of positive ones.Below is a demonstration for the same −ExampleLive Demodef reverse_tuple(my_tuple):    return [tup[::-1] for tup in my_tuple]           my_list = [(21, 22), (43, 74, 45), (76, 17, 98, 19)] print("The list ... Read More

When it is required to check if a string is symmetrical or it is a palindrome, a method can be defined, that uses the ‘while’ condition. Another method is defined to check the symmetry that uses the ‘while’ and ‘if’ conditions too.A palindrome is a number or string, which when read from left to right or right to left is the same value. The index values are the same.ExampleBelow is a demonstration for the same − Live Demodef check_palindrome(my_str):    mid_val = (len(my_str)-1)//2    start = 0    end = len(my_str)-1    flag = 0    while(start