Programming Articles - Page 1638 of 3366

IntroductionPandas have a dual selection capability to select the subset of data using the Index position or by using the Index labels. Inthis post, I will show you how to “Select a Subset Of Data Using Index Labels” using the index label.Remember, Python dictionaries and lists are built-in data structures that select their data either by using the index label or byindex position. A dictionary’s key must be a string, integer, or tuple while a List must either use integers (the position) or sliceobjects for selection.Pandas have .loc and.iloc attributes available to perform index operations in their own unique ways. ... Read More

This article is aimed at developers who want to find the largest or smallest items with Python. I will show a few methods touse and will conclude the best method for you.Method – 1: Slice approach on a ListIf you are simply trying to find the single smallest or largest item i.e N = 1, it is faster to use min() and max().Let us begin by generating some random integers.import random # Create a random list of integers random_list = random.sample(range(1, 10), 9) random_listOutput[2, 4, 5, 1, 7, 9, 6, 8, 3] FINDING THE SMALLEST & LARGEST ITEM (N=1) # ... Read More

ProblemYou need to identify the most frequently occurring items in a sequence.SolutionWe can use counter to keep track of the items in a sequence.What is a Counter ?The “Counter” is a mapping that holds an integer count for each key. Updating an existing key adds to its count. This Objectis used for counting the instances of hashable objects or as a multiset.The “Counter” is one of your best friends when you are performing data analysis.This object has been present in Python for quite some time, and so for a lot of you, this will be a quick review.We will start ... Read More

Depending on the flexibility and complexity required, we can split a string on multiple delimiters in several ways such as using Python's re.split() method, which is a combination of various string methods. Some of the commonly used approaches to split strings on multiple delimiters. str.replace() and str.split() re.split() Method translate() ... Read More

We are given with a string of characters and the task is to calculate the count of pairs having both the elements as vowels. As we know there are five vowels in English alphabet i.e. a, i, e, o, u and other characters are known as Consonants.Input − string str = "tutorials point”Output − Count the pairs of vowels in the given string are: 2Explanation − From the given string we can form pairs as (t, u), (u, t), (t, o), (o, r), (r, i), (i, a), (a, l), (l, s), (s, p), (p, o), (o, i), (i, n) and ... Read More

We are given with an array of positive integer numbers and an integer variable k. The task is to calculate the count of the number of elements in an array which is divisible by the given value k.Input − int arr[] = {4, 2, 6, 1, 3, 8, 10, 9}, k = 2Output − Count the number of elements in an array which are divisible by 2 are − 5Explanation − we will divide the elements in an array by a value k and check whether the reminder is 0 or not. So, 4 is divisible by 2, 2 is ... Read More

We are given a string of characters and the task is to calculate the count of character pairs having pairs at the same distance as we have in english alphabets.Input − string str = ‘Tutorials Point’Output − Count of character pairs at same distance as in English alphabets are: 5Explanation − The character pairs with same distance as in english alphabets are (u, t), (u, r), (t, r), (i, o) and (s, n). So in total there are 5 pairs.Input − string str = ‘Learning is the best habit’Output − Count of character pairs at same distance as in English ... Read More

We are given a number and the task is to calculate the count of numbers from the range 0 till the given number let’s say, num having exactly one set bitSet bits in a binary number is represented by 1. Whenever we calculate the binary number of an integer value then it is formed as the combination of 0’s and 1’s. So, the digit 1 is known as set bit in the terms of the computer.Input − int num = 15Output − Count of numbers having only 1 set bit in the range [0, 15] are − 4Explanation − The ... Read More

We are given the total number of elements and the task is to calculate the total number of matrices with different orders that can be formed with the given data. A matrix has an order mxn where m are the number of rows and n are the number of columns.Input − int numbers = 6Output −Count of matrices of different orders that can be formed with the given number of elements are: 4Explanation − we are given with the total number of elements that a matrix of any order can contain which is 6. So the possible matrix order with ... Read More

We are given an array of integer type elements and a matrix or 2-D array of given row and column size and the task is to calculate the count of elements of an array that are present in each row of a matrix.Input int arr = { 2, 4, 6} and int matrix[row][col] = { { 2, 4, 6 }, {3, 4, 6}, {6, 2, 1}}Output Elements of array in row 1 are: 3 Elements of array in row 2 are: 2 Elements of array in row 3 are: 2Explanation we are having array containing 2, 4 and 6 as elements and now ... Read More