GeeksforGeeks

The volatile keyword is intended to prevent the compiler from applying any optimizations on objects that can change in ways that cannot be determined by the compiler.

Given a Singly Linked List, write a function to delete a given node. Your function must follow following constraints:

Consider simple representation (without any dummy node) of Linked List. Functions that operate on such Linked lists can be divided in two categories:

Consider the following Java program:

Like C++, Java also supports copy constructor. But, unlike C++, Java doesn’t create a default copy constructor if you don’t write your own.

Question 1 Predict the output of the following program. What does the following fun() do in general?

Predict the output of following C++ program.

The purpose of inheritance is same in C++ and Java. Inheritance is used in both languages for reusing code and/or creating is-a relationship. There are following differences in the way both languages provide support for inheritance.

Predict the output of following C Program.

Directly accessing Grandparent’s member in Java: Predict the output of following Java program.

Write a C program to find the smallest of three integers, without using any of the comparison operators.

Given two numbers represented by two lists, write a function that returns sum list. The sum list is list representation of addition of two input numbers.

Predict the output of following Java programs.

Difficulty Level: Rookie Predict the output of following Java Programs.

Given a cost matrix cost[][] and a position (m, n) in cost[][], write a function that returns cost of minimum cost path to reach (m, n) from (0, 0). Each cell of the matrix represents a cost to traverse through that cell.

In the virtual constructor idiom we have seen the way to construct an object whose type is not determined until runtime. 

Given that integers are read from a data stream. Find median of elements read so for in efficient way. For simplicity assume there are no duplicates. For example, let us consider the stream 5, 15, 1, 3 … After reading 1st element of stream – 5 -> median – 5 After reading 2nd element of [...]

Can we make a class constructor virtual in C++ to create polymorphic objects?

Question 1 Consider the following recursive C function. Let len be the length of the string s and num be the number of characters printed on the screen

Predict the output of following C++ programs.

Given a boolean matrix mat[M][N] of size M X N, modify it such that if a matrix cell mat[i][j] is 1 (or true) then make all the cells of ith row and jth column as 1.

Predict the output of following C programs.

A class declared inside a function becomes local to that function and is called Local Class in C++. For example, in the following program, Test is a local class in fun().

Predict the output of following program?

Trie is an efficient information retrieval data structure. Using trie, search complexities can be brought to optimal limit (key length).