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Articles by sudhir sharma
Page 44 of 98
Sum of the series Kn + ( K(n-1) * (K-1)1 ) + ( K(n-2) * (K-1)2 ) + ... (K-1)n in C++
In the problem, we are ginen two number k and n of the series K^n + ( K^(n-1) * (K-1)^1 ) + ( K^(n-2) * (K-1)^2 ) + ... (K-1)^n. Our task is to create a program to find the sum of the series.Let’s take an example to understand the problem, Input: n = 3, k = 4 Output: 175 Explanation: Sum of the series is = 4^3 + ( (4^2)*(3^1) ) + ( (4^1)*(3^2) ) + ( (4^0)*(3^3) ) = 64 + 48 + 36 + 27 = 175A simple way to solve the problem, is using a for ...
Read MoreSum of two numbers where one number is represented as array of digits in C++
In this problem, we are given two numbers, from which one is represented using array of digits. Our task is to create a program that will find the sum of two numbers where one number is represented as array of digits.Let’s take an example to understand the problem, Input: n = 213, m[] = {1, 5, 8, } Output: 371 Explanation: 213 + 158 = 371To solve this problem, we will simply digit by digit from the number which element of the array. It lsb of the number is added to the (n-1)th element of the array. The carry will ...
Read MoreBinary Indexed Tree: Range Update and Range Queries in C++
Here, we are given an array of size n which initially has all elements 0. And there are some queries that are to be performed on it. There are two types of queries −update(l, r, value) − Add value to the elements of the array that are between index l to r. For example, update(2, 4, 5) will update the array by placing the element 2 at the element at index 4 and 5.getRangeSum(l, r) − Find the sum of elements within the range of elements from l to r. For example, getRangeSum(4, 7) will find the sum of all ...
Read MoreBinary tree to string with brackets in C++
In this problem, we are given a binary tree. Our task is to create a program that will convert a binary tree to string with brackets in C++.The values of the binary tree are integers and it will be fed to the program in a preorder traversing way. The string should contain only integers and parentheses (), also it should be optimized i.e. all the empty pairs should be eliminated.Binary Tree is a tree that has a special condition that each node can have a maximum of two children.Example of a binary tree −Preorder traversal : [4, 1, 8, 3, ...
Read MoreC program for pipe in Linux
Here, we will create a C program for pipe in Linux. In this program, we will read some text from the input stream and then print it to the output screen.First, let’s learn basics about pipe in LinuxPipe is used to transfer data, it can be used for communication between process/ command/ program for transferring standard output between two in Linux or Unix based system.One important thing to be noted is that pipes are unidirectional i.e. data can either flow from left to right or from right to left in the program.Here, we will create a pipe that will read ...
Read MoreC program to print employee details using Structure
Here, we are given a structure containing details of employees. Our task is to create a C program to program to print employee details using structure.The details of the employee that are in the structure are name, age, phone number, salary, and our program will print these details.The details of the employees are pre-declared in the program and we will one by one print all the values. For this, we will create a function that will access the object of the structure and then print all the members of the structure using this object.C Program to print employee details using ...
Read MoreWrite a function to delete a Linked List in C++ Programming
Here, we will create a function that will delete all elements of a linked list one by one.In c/c++, there is no specific function to perform this task but in java, the automatic garbage collection is done to ease deleting linked list.Now, let’s see the implementation of this program, Example#include using namespace std; class Node{ public: int data; Node* next; }; void deleteLinkedList(Node** head_ref){ Node* current = *head_ref; Node* next; while (current != NULL){ coutnext = (*head_ref); (*head_ref) = new_node; } int main(){ Node* head = NULL; ...
Read MoreWrite a function that generates one of 3 numbers according to given probabilities in C++
In this problem, we have to create a function that will generate three numbers based on the given probability.For this, we will use the built-in random number generator function which is rand(a, b) which generates random numbers within the range [a, b] with equal probability.Our task is to return only three numbers A, B, C which have the probability of occurrence as P(A), P(B), P(C) respectively and according to definition of probability P(A) + P(B) + P(C) = 1.To create our function using rand(a, b). we will use its feature that the probability of occurrence of any number from a ...
Read MoreWrite a function that counts the number of times a given int occurs in a Linked List in C++
In this problem, we are given a linked list. Our task is to create a function that will be able to count the number of times a given number occurs in the linked list.Let’s take an example to understand the problem, InputLinked list = 10-> 50 -> 10 -> 20 -> 100 -> 10, int = 10Output3Explaination − the number 10 occurs 3 times in the linked list.The solution to this problem is simple, just traverse the linked list and increment a counter the current node value is equal to the given number.The looping over the nodes of the linked ...
Read MoreWrite a C program that won't compile in C++
Here, we will write some c programs that won’t compile in c++. Though c++ is considered as a successor of c that has all its features and has compatibility with c code there are some programs that won’t compiler or given a compilation error when compiled with c++ compiler.A list of some of the C programs that won’t compile in c++ are −Call to a function before declaration − In c++, function call before declaration gives compilation error. But this works fine in c.Example#include int main(){ printHello(); return 0; } void printHello(){ printf("TutorialsPoint"); }OutputTutorialsPointUsing typecasted pointers ...
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