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A correlation matrix is a table containing correlation coefficients for many variables. Each cell in the table represents the correlation between two variables. The value might range between -1 and 1. A correlation matrix is used for summarizing the data, diagnose the advanced analysis, and as an input for a more complicated study. Correlation matrix is used to represent the relationship between the variables in the data set. It is a type of matrix that helps programmers analyze the relationship between data components. It represents the correlation coefficient between 0 and 1. A positive value implies a good correlation, a ... Read More
To find the least greater element on the right of an array of integers, we need to consider an array of integers. For each element, we need to find an element that is greater than the current element and is the least from all the candidate elements we have. Suppose we have elements such as [5, 23, 65, 31, 76, 32, 87, 23, 76, 32, 88]. vector arr = {5, 23, 65, 31, 76, 32, 87, 23, 76, 32, 88}; solve(arr); We can list our requirements and then think over the requirements to find a solution. We need a ... Read More
We are given a linked list, and we need to find elements in the given linked list which are greater and present in the right of the current element. The count of these elements needs to be substituted into the current node's value. Let's take a linked list with the following characters and replace each node with its Surpasser count − 4 -> 6 -> 1 -> 4 -> 6 -> 8 -> 5 -> 8 -> 3 From backward, traverse the linked list (so we do not need to worry about elements to the left of the current). ... Read More
Hubs are basic network devices that operate at the Physical Layer and they do not perform packet filtering or addressing function; they send the data packets to all the connected devices. Switches, on the other hand, function at the Data Link Layer to connect several devices in a network. Switches are mostly utilized to transmit data packets between various network devices such as routers and servers.Read through this article to find out more about hubs and switches and how they are different from each other.What is a Switch?A switch is essentially a piece of hardware or a device responsible for ... Read More
GPS or Global Positioning System is a satellite-based navigation system developed in 1970 by the US Department of Defense. With time, it became a worldwide global utility and it is now used heavily from mobiles to cars for navigation purposes.Satellite Navigation System is a geospatial positioning system that employs satellites to enable autonomous positioning. It is built on a large network of artificial satellites in the medium-earth orbit that broadcast radio waves. Satellite Navigation Systems assist us in navigating unfamiliar roadways, whether by land, sea, or air.Read through this article to find out more about GPS and Satellite Navigation Systems ... Read More
In this article, we will replace "AB" with "C" in the given string having upper case latin characters. The occurrences of "AB" becomes "C, " but single "A" and "B" are unaffected. Let us look at some input scenarios − Let's have a string "ABOUTME" Input: "ABOUTME" Result: COUTME We start traversing the string from index one. We then check the current and previous elements for "B" and "A, " respectively. If we find it, then we replace the last append ("A") with a "C." The worst case time complexity will occur when there is no substring “AB” ... Read More
The method is devised to replace a string of consonants with the closest vowels from the alphabet (also known as lowercase Latin letters). If two vowels are equally close, we can replace them with the first ones in these letters. Let us look at some input scenarios − Suppose we have a string such as “ebgkjasjd, ” and now we need to change all the present consonants with the nearest vowels in a string. Input = "ebgkjasjd"; Result = ebgkjasjd eaeiiauie Taking element ‘b, ’ we can replace it with ‘a’ since that is the nearest vowel. We could ... Read More
In this article, we are given an array of integers and a key. We must find the key repeatedly in the array and double it on each find in the array. We need to return the value not present in the array doing this operation. Some input scenarios to look at to understand how the method works in different cases Let's have an array [1, 2, 6, 3, 7, 4, 9], and its key is 1. Input: {1, 2, 3, 4, 5, 6}, k = 1 Result: 8 If we find 1 we double it to 2. If we ... Read More
Given a string, find a subsequence with the length, at least two, repeated in the string. The index of the subsequence element numbers must not be in the same order. string s = "PNDPNSP"; print("Repeated subsequence of length 2 or more: ", (check(s) ? "Yes" : "No")); Let us look at few examples below to see how the method works in different cases − Example 1 − str = "PNDPNSP" Explanation − Here, the answer is true because there is a subsequence "PN, " repeated in the string. Example 2 − str = "PPND" Explanation − Here, the answer ... Read More
In this problem, a string is taken as the input and we have to sort the words present in the string in a lexicographical order. To do that, we assign an index to each word in the string (differentiated with spaces in between) starting from 1, and the output is obtained in the form of sorted index. String = {“Hello”, “World”} “Hello” = 1 “World” = 2 Since the words in the input string are already in lexicographical order, the output is printed as “1 2”. Let us look at some input/result scenarios − Assuming all the words in ... Read More