Skip to main content

Featured

say hello world with C++ - Solution in Hacker Rank - hackerranksolutions8

  Objective This is a simple challenge to help you practice printing to  stdout . You may also want to complete  Solve Me First  in C++ before attempting this challenge. We’re starting out by printing the most famous computing phrase of all time! In the editor below, use either  printf  or  cout  to print the string  Hello ,World!  to  stdout . The more popular command form is  cout . It has the following basic form: cout<<value_to_print<<value_to_print; Any number of values can be printed using one command as shown. The  printf  command comes from C language. It accepts an optional format specification and a list of variables. Two examples for printing a string are: printf("%s", string);   printf(string); Note that neither method adds a newline. It only prints what you tell it to. Output Format Print   Hello ,World!   to stdout. Sample Output Hello, World! Solution:- //Say Hello, ...
Post a Comment
Read more

Array Reversal solution in C Hackerrank Solution

 Given an array, of size n , reverse it.

Example: If array,arr=[1,2,3,4,5] , after reversing it, the array should be,arr=[5,4,3,2,1] .

Input Format

The first line contains an integer, n, denoting the size of the array. The next line contains n space-separated integers denoting the elements of the array.

Costraints

1 < n < 1000

1 < arri < 1000 , where  is the  element of the array.

Output Format

The output is handled by the code given in the editor, which would print the array.

Sample Input 0

6
16 13 7 2 1 12

Sample Output 0

12 1 2 7 13 16

Explanation 0

Given array, arr =[16,13,7,2,1,12]. After reversing the array, arr=[12,1,2,7,13,16]

Sample Input 1

7
1 13 15 20 12 13 2

Sample Output 1

2 13 12 20 15 13 1

Sample Input 2

8
15 5 16 15 17 11 5 11

Sample Output 2

11 5 11 17 15 16 5 15

Code

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int num, *arr, i,j;
    scanf("%d", &num);
    arr = (int*) malloc(num * sizeof(int));
    for(i = 0; i < num; i++) {
        scanf("%d", arr + i);
    }


    /* Write the logic to reverse the array. */

    for(i = num-1; i >=0; i--)
        printf("%d ", *(arr + i));
    return 0;
}

Comments

Post a Comment