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In this post, you will find the solution for Quicksort 1 – Partition in Java-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To Algorithm
The word Algorithm means “a process or set of rules to be followed in calculations or other problem-solving operations”. Therefore Algorithm refers to a set of rules/instructions that step-by-step define how a work is to be executed upon in order to get the expected results.
Advantages of Algorithms:
- It is easy to understand.
- Algorithm is a step-wise representation of a solution to a given problem.
- In Algorithm the problem is broken down into smaller pieces or steps hence, it is easier for the programmer to convert it into an actual program.
Link for the Problem – Quicksort 1 – Partition– Hacker Rank Solution
Quicksort 1 - Partition – Hacker Rank Solution
Problem:
![Quicksort 1 - Partition in Algorithm | HackerRank Programming Solutions | HackerRank Problem Solving Solutions in Java [💯Correct] 2 image 119](https://technorj.com/wp-content/uploads/2021/12/image-119.png)
![Quicksort 1 - Partition in Algorithm | HackerRank Programming Solutions | HackerRank Problem Solving Solutions in Java [💯Correct] 3 image 120](https://technorj.com/wp-content/uploads/2021/12/image-120.png)
Sample Input
STDIN Function ----- -------- 5 arr[] size n =5 4 5 3 7 2 arr =[4, 5, 3, 7, 2]
Sample Output
3 2 4 5 7
Explanation
![Quicksort 1 - Partition in Algorithm | HackerRank Programming Solutions | HackerRank Problem Solving Solutions in Java [💯Correct] 4 image 121](https://technorj.com/wp-content/uploads/2021/12/image-121.png)
Quicksort 1 - Partition – Hacker Rank Solution
import java.util.Scanner; /** * * @author Techno-RJ * */ public class Quicksort1Partition { public static void partition(int[] a, int lo, int hi) { int i = lo; int j = hi + 1; while (hi > lo) { while (a[++i] < a[lo]) if (i == hi) break; while (a[--j] > a[lo]) if (j == lo) break; if (i >= j) break; swap(a, i, j); } swap(a, lo, j); printArray(a); } private static void swap(int array[], int i, int j) { int temp = array[j]; array[j] = array[i]; array[i] = temp; } public static void printArray(int a[]) { for (int i = 0; i < a.length; i++) System.out.print(a[i] + " "); } public static void main(String[] args) { Scanner sc = new Scanner(System.in); int N = sc.nextInt(); int a[] = new int[N]; for (int i = 0; i < N; i++) { a[i] = sc.nextInt(); } partition(a, 0, a.length - 1); sc.close(); } }