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Introduction In this tutorial, we find an approach to find the range update Queries to XOR with 1 in a binary array. To implement the approach we use a binary array which is an array consisting of 0 and 1. The range update queries are the queries which are used to modify the binary array within the given upper and lower limit of a range. The upper and lower limits are the index of binary array elements. The elements lying in that range are updated with defined operations. XOR is one of the bitwise operations standing for exclusive OR. Its ... Read More
Introduction In this tutorial, the task is to use queries to search for an element in an array. It is to push to the front after every query in C++. To implement this task, it takes an array A with elements from 1 to 5 and a query array Q for finding the element in A and moving it to the front of the array. The output is the index number of the searched elements. We use two methods for moving array elements to the front as per the query array. Naive Approach − Iterate through the array of ... Read More
Introduction In this tutorial, we will learn about the istringstream and how to use it for processing strings. istringstream is an object of string class defined in the header file. It is used for reading from the stream strings. A stream is a flow of data (collection of characters) between input-output devices and programs. The header file defines 3 string class objects, which are as follows − istringstream ostringstream Stringstream All are used for separate operations, like istringstream is responsible for stream input, ostringstream is for stream output, and stringstream handles both input and output of ... Read More
In this article we will learn about Queue.LIFOQueue vs Collections.Deque in Python programming language. When we need to manage our data using the last in first out method then we can use these data structures. But to choose one of them we need to know about their functionalities and characteristics. Before that let’s get to know about Queue.LIFOQueue and Collections.Deque. LIFOQueue This class is part of the queue module. It works as stack data structure and it is considered as thread safe means we can talk between the different threads at the same time. Here are some specifications of ... Read More
In this article we will get to know how we can replace sublist value with new list. You may have faced this problem while working with manipulation of list. Here we will see various methods using which we can replace the sublist with other list. Let’s get to know this using below example − listItem = [1, 2, 3, 4, 5, 6] new_list = [7, 8, 9] Here we have list named as listItem which contains some elements and we have another list named as new_list. So, we want to replace the sublist of listItem with new_list. Take ... Read More
In this article we will learn how we can replace rear (word at the end of the string) word with any other given word. You may have seen this problem while doing manipulation of string. Here we will see various methods for replacing the rear word in string with given word. Let’s get to know this using below example − string_txt = "This cat is running very Fast" Here we have a string string_txt which contains sentences and we want to replace the last word which is "Fast" into "Slow" so that the resulting string will be like. ... Read More
In this article we will learn about replacement of punctuation with letter k in the string. You may have seen this problem while performing text processing or data cleaning task in the python where you need to replace punctuations with specific characters or any symbol. Here we will see various methods for replacing the punctuations with given text "k" Let’s get to know this using below example − string = "Welcome, to, * the website ! aliens" Here we have a string which contains punctuations like [, * !] and we want to replace that with text "k". ... Read More
In this article we will see method to replace negative values with zero. If we talk about data analysis then handling negative values is very crucial step to ensure meaningful calculation. So, here you will learn about various methods using which we can replace negative values with 0. Method 1. Using Traversal and List Comprehension. Example import numpy as np arr = np.array([-12, 32, -34, 42, -53, 88]) arr = [0 if x < 0 else x for x in arr] arr = np.array(arr) print("array with replaced values is: ", arr) Output array with replaced values ... Read More
In this article we will see method to replace NaN (Not a Number) value with the average of columns. If we talk about data analysis then handling NaN value is very crucial step. So, here you will learn about various methods using which we can replace NaN (Not a Number) value with the average of columns. Method 1: Using Numpy.nanmean(). Example import numpy as np arr = np.array([[1, 2, np.nan], [4, np.nan, 6], [np.nan, 8, 9]]) col_means = np.nanmean(arr, axis=0) arr_filled = np.where(np.isnan(arr), col_means, arr) print("Column mean: ", col_means) print("Final array: ... Read More
In this article we will see method to replace the multiple characters at once in any string. While working with programs where we face such situation when we will have to replace any particular character simultaneously at all of its occurences. Suppose a situation in which you have an article in which it contains one word named as “word” which is having multiple occurrences and you want to convert that “word” into “work” so you can do this manually but it is very bad practice of doing this work one by one. So, we will look at multiple methods using ... Read More