All Easy Articles

Merge an array of size n into another array of size m+n

There are two sorted arrays. First one is of size m+n containing only m elements. Another one is of size n and contains n elements.… Read More

Amazon

Brocade

Goldman Sachs

Juniper Networks

Microsoft

Quikr

Snapdeal

Synopsys

Zoho

Arrays

DSA

How to declare a pointer to a function?

While a pointer to a variable or an object is used to access them indirectly, a pointer to a function is used to invoke a… Read More

C-Pointers

pointer

C Language

How to print % using printf()?

Here is the standard prototype of printf function in C: int printf(const char *format, ...); The format string is composed of zero or more directives:… Read More

C-Input and Output Quiz

c-puzzle

C Language

Write a C macro PRINT(x) which prints x

At the first look, it seems that writing a C macro which prints its argument is child’s play. Following program should work i.e. it should… Read More

C Macro

C-Macro & Preprocessor

c-puzzle

C Language

Count set bits in an integer

Write an efficient program to count the number of 1s in the binary representation of an integer.Examples : Input : n = 6Output :… Read More

Adobe

Brocade

Cisco

Juniper Networks

Qualcomm

Samsung

setBitCount

Wipro

Bit Magic

DSA

Lowest Common Ancestor in a Binary Search Tree.

Given two values n1 and n2 in a Binary Search Tree, find the Lowest Common Ancestor (LCA). You may assume that both values exist in… Read More

Accolite

Amazon

LCA

MAQ Software

Microsoft

Samsung

Synopsys

Binary Search Tree

DSA

Tree

Given a binary tree, print out all of its root-to-leaf paths one per line.

Given the roots of a tree. print out all of its root-to-leaf paths one per line.. Algorithm: initialize: pathlen = 0, path[1000] /*1000 is some max… Read More

DSA

Tree

Write a program to add two numbers in base 14

Asked by Anshya. Base 14: Decimal numbersBase 14 numbers0011223344556677889910A11B12C13D14D1 Below are the different ways to add base 14 numbers.Method 1 Thanks to Raj for suggesting this… Read More

DSA

Mathematical

How can I return multiple values from a function?

We all know that a function in C can return only one value. So how do we achieve the purpose of returning multiple values. Well,… Read More

C-Functions

c-puzzle

C Language

Does C support function overloading?

First of all, what is function overloading? Function overloading is a feature of a programming language that allows one to have many functions with same… Read More

C-Functions

c-puzzle

C Language

Detect loop or cycle in a linked list

Given a linked list, check if the linked list has a loop (cycle) or not. The below diagram shows a linked list with a loop. … Read More

Accolite

Amazon

Linked Lists

loop

MAQ Software

Samsung

Tortoise-Hare-Approach

DSA

Linked List

Reverse a Linked List

Given a pointer to the head node of a linked list, the task is to reverse the linked list. We need to reverse the list… Read More

Accolite

Adobe

Amazon

MakeMyTrip

Microsoft

Qualcomm

Reverse

Samsung

SAP Labs

Snapdeal

Zoho

DSA

Linked List

Python Program to Reverse a linked list

Given pointer to the head node of a linked list, the task is to reverse the linked list. We need to reverse the list by… Read More

Python DSA-exercises

Python LinkedList-exercises

Python-Data-Structures

Python Programs

Java Program to print all permutations of a given string

A permutation also called an “arrangement number” or “order,” is a rearrangement of the elements of an ordered list S into a one-to-one correspondence with… Read More

Java Programs

Output of C Programs | Set 5

Predict the output of below programs Question 1 c int main(){ while(1){ if(printf("%d",printf("%d"))) break; else continue; } return 0;} Output: Can’t be predictedExplanation: The condition in while loop is 1 so at first shot it… Read More

C-Output

Program Output

extern Keyword in C

extern keyword in C applies to C variables (data objects) and C functions. Basically, the extern keyword extends the visibility of the C variables and… Read More

C Keyword

C-Storage Classes and Type Qualifiers

C Language

Little and Big Endian Mystery

What are these? Little and big endian are two ways of storing multibyte data-types ( int, float, etc). In little endian machines, last byte of binary… Read More

Big Endian

Endianness

Little Endian

Articles

Bit Magic

DSA

What is the best way in C to convert a number to a string?

Solution: Use sprintf() function. #include<stdio.h> int main() { char result[50]; float num = 23.34; sprintf(result, "%f", num); printf("\n The string for the num is %s",… Read More

C-Data Types

c-puzzle

C Language

Check for Integer Overflow

Write a “C” function, int addOvf(int* result, int a, int b) If there is no overflow, the function places the resultant = sum a+b in… Read More

integer-overflow

Bit Magic

DSA

Output of C Programs | Set 3

Predict the output of the below program. Question 1 c #include <stdio.h>int main(){ printf("%p", main); getchar(); return 0;} Output: Address of function main. Explanation: Name of the function is actually… Read More

C-Output

Program Output