Question:
Anjali likes to play mathematical tricky games. She gets n numbers for an array. Help Anjali to write a Java program to sort the first half of the array in ascending order and the second half of the array in descending order. If the size of the array is 0 or lesser then display the message as “Array size should be greater than 0”.
Sample Input 1:
Enter the size of an array:
5
Enter the elements:89
23
56
12
99
Sample Output 1:
23
56
89
99
12
Sample Input 2:
Enter the size of an array:
0
Sample Output 2:
Array size should be greater than 0
Code:
Main.java
import java.util.*; public class ArraySort { public static void main (String[] args) { Scanner sc=new Scanner(System.in); System.out.println("Enter the size of an array:"); int n=sc.nextInt(); if(n>0) { int[] arr=new int[n]; System.out.println("Enter the elements:"); for(int i=0;i<n;i++) { arr[i]=sc.nextInt(); } int[] arr1=Arrays.copyOfRange(arr, 0, (n+1)/2); int[] arr2=Arrays.copyOfRange(arr, (n+1)/2, n ); Arrays.sort(arr1); //Arrays.sort(arr2, Collections.reverseOrder()); for(int i=0;i<n/2;i++) { for(int j=0;j<(n/2)-1;j++) { if(arr2[j]<arr2[j+1]) { int temp=arr2[j]; arr2[j]=arr2[j+1]; arr2[j+1]=temp; } } } int len2=arr1.length+arr2.length; int[] res=new int[len2]; System.arraycopy(arr1, 0, res, 0, (n+1)/2 ); System.arraycopy(arr2, 0, res, (n+1)/2, n/2 ); for(int i : res) { System.out.println(i); } } else { System.out.println("Array size should be greater than 0"); } } }
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