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Articles on Trending Technologies
Technical articles with clear explanations and examples
Binary Tree Tilt in C++
Let us consider that we have the root node of a binary tree; the task is to find and return the sum of tilt of every node.The tilt of a binary tree is nothing but constructing the binary tree by finding the absolute difference of child nodes in the left subtree and the right subtree in each level. At some particular level, the nodes which don't have any child nodes, we simply tilt by replacing that node with zero.ExampleInputOutput: 15Explanation: Finding the tilt at every level of the given binary tree, The tilt of node 3 = 0The tilt of node ...
Read MoreDivisible by 37 for large numbers in C++ Program
In this tutorial, we are going to write a program that checks whether the given large number is divisible by 37 or not.We are going to use a little bit of math here. Let's see the steps to solve the problem.Initialize the number.If the length of the given number is not divisible by 3, then add zeroes at the beginning of the number to make length is divisible by 3.Divide the number into 3 digits groups and add them.If the resultant sum is divisible by 37, then the given number is divisible by 37.If the resultant sum is 4 digits ...
Read MoreCheck if a Tree is Isomorphic or not in C++
In a binary tree, each node contains two children, i.e., left child and right child. Let us suppose we have two binary trees and the task is to check if one of the tree can be obtained by flipping another tree by left of it or not.A Tree is Isomorphic if it can be obtained by flipping the other tree in its left side.For ExampleInput-1Output: IsomorphicExplanation: The given Tree-2 can be obtained by flipping the Tree-1 in the left side, thus the Tree is isomorphic.Approach to Solve this ProblemA recursive approach to solve this particular problem is that a Boolean function will ...
Read MoreDivision without using '/' operator in C++ Program
In this tutorial, we are going to learn how to divide a number without using the division (/) operator.We have given two numbers, the program should return the quotient of the division operation.We are going to use the subtraction (-) operator for the division.Let's see the steps to solve the problem.Initialize the dividend and divisor.If the number is zero, then return 0.Store whether the result will be negative or not by checking the signs of dividend and divisor.Initialize a count to 0.Write a loop that runs until the number one is greater than or equals to the number two.Subtract the ...
Read MoreDivisors of n-square that are not divisors of n in C++ Program
In this tutorial, we are going to write a program that finds the divisors count of n-square and not n.It's a straightforward problem. Let's see the steps to solve the problem.Initialize the number n.Initialize a counter for divisors.Iterate from 2 to n^2n2.If the n^2n2 is divisible by the current number and nn is not divisible by the current number, then increment the count.Print the count.ExampleLet's see the code.#include using namespace std; int getNumberOfDivisors(int n) { int n_square = n * n; int divisors_count = 0; for (int i = 2; i
Read MoreHow to find the position of NA in an R vector?
When we have NA’s/missing values in an R vector then we want to replace those NA’s and for this purpose we might be needing the position of those values. These positions will be helpful especially in situations when we want to manually replace the missing values. The replacement can be done by using which function with is.na.Example1x1
Read MoreHow to remove dot and number at the end of the string in an R vector?
To remove dot and number at the end of the string, we can use gsub function. It will search for the pattern of dot and number at the end of the string in the vector then removal of the pattern can be done by using double quotes without space. After that the vector will be passed as shown in the below examples.Example1x1
Read MoreC++ Program to Check Whether a given Binary Tree is a Full Binary Tree or not
Given a Binary Tree, the task is to check whether it is a Full Binary Tree or not. A Binary Tree is said to be a Full Binary Tree if every node has zero or two children.For ExampleInput-1Output:1Explanation: Every node except the leaf node has two children, so it is a full binary tree.Input-2: Output:0Explanation: Node 2 has only one child, so it is not a full binary tree.Approach to Solve this ProblemTo check whether a given binary tree is full or not, we can check recursively for the left subtree and right subtree.Input a given Binary Tree having nodes and its children.A ...
Read MoreDouble Base Palindrome in C++ Program
In this tutorial, we are going to write a program that checks whether the given number is a palindrome in two number systems.We have given a number and a base for another number system. We have to check whether the given number is a palindrome in the decimal number system and given number system.Let's see the steps to solve the problem.Initialize the number and number system base.Check whether the given number is a palindrome in the decimal number system or not.Convert the number into another number system in a string format.Check whether the converted number is palindrome or not.If the ...
Read MoreHow to remove column names from an R data frame?
There are situations when we might want to remove column names such as we want to manually replace the existing column names by new names or we simply don’t want to use them if we are very much familiar with the column characteristics. To remove the columns names we can simply set them to NULL as shown in the below examples.Example1Consider the below data frame −set.seed(357) x1
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