
Tech Revolvers
![Delete duplicate-value nodes from a sorted linked list[HackerRank solution]](https://additionalknowledge.com/wp-content/uploads/2017/12/hackerrank.png?w=600)
Delete duplicate-value nodes from a sorted linked list[HackerRank solution] Question: You’re given the pointer to the head node of a sorted linked list, where the data in the nodes is in ascending order. Delete as few nodes as possible so that the list does not contain any value more than once. The given head pointer… Read more
![Get Node Value [HackerRank solution]](https://additionalknowledge.com/wp-content/uploads/2017/12/hackerrank.png?w=600)
Get Node Value [HackerRank solution] You’re given the pointer to the head node of a linked list and a specific position. Counting backwards from the tail node of the linked list, get the value of the node at the given position. A position of 0 corresponds to the tail, 1 corresponds to the node before… Read more
![Monk and Rotation [Hacker earth]](https://additionalknowledge.com/wp-content/uploads/2017/12/hackerearth-logo.jpg?w=997)
Monk and Rotation [Hacker earth] PROBLEM: Monk loves to preform different operations on arrays, and so being the principal of Hackerearth School, he assigned a task to his new student Mishki. Mishki will be provided with an integer array AA of size NN and an integer KK , where she needs to rotate the array in the right direction by K… Read more

USING SCANNER FOR INPUT IN JAVA Scanner is a class in java.util package used for obtaining the input of the primitive types like int, double etc. and strings. In Java, we input with the help of the Scanner class. Java has a number of predefined classes which we can use. import java.util.Scanner; // This will import just the Scanner class… Read more

Sum of digits in c or c++ without pointers SO, the main logic behind this is=: b = a%10; // we took the remainder after dividing by 10 thats the last digit sum = sum+ (b*c); // adding last digit to sum a = a/10; //to remove last digit from a c= c/10; //to… Read more
![Append in rails[AJAX][info]](https://additionalknowledge.com/wp-content/uploads/2017/06/images.png?w=225)
Append in rails THESE both line ; the line 3 and 9 meant same. You can use either of them. These lines are used when you want to append html pages using ajax. Read more