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QuestionWhat is causing error in my merge sort java code? Pin
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QuestionWhat may be the error in this java ->merge sort code? Pin
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import java.util.Scanner;
public class Main
{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    System.out.println("Enter the size of the array");
		int n = sc.nextInt();
		int arr[]=new int[n];
		System.out.println("Enter the elements of the array");
		for(int i=0;i<n;i++)
		{
		    arr[i]=sc.nextInt();
		}
		DivArray(arr,0,arr.length-1);
	
		for(int z:arr)
		{
		    System.out.print(z+" ");
		}
	}
	static void DivArray(int arr[],int low,int high)
	{
	    if(low<high)
	    {
	        int mid=(low+high)/2;
	        DivArray(arr,low,mid);       
	        DivArray(arr,mid+1,high);
	        MergeSort(arr,low,mid,high);
	    }
	}
	static void MergeSort(int arr[],int low,int mid,int high)
	{
	    int i = low;
	    int k = low;
	    int j = mid+1;                            
	    int dummy[]=new int[arr.length];
	    
	    while(i<=mid && j<=high)
	    {
	        if(arr[i]<arr[j])
	        {                                   
	            dummy[k]=arr[i];
	            k++;
	            i++;
	            
	        }else{
	           
	            dummy[k]=arr[j];
	            k++;
	            j++;
	        }
	        
	    }
	    while(i<=mid)          
	    {
	        dummy[k]=arr[i];
	        k++;
	        i++;
	    }
	    while(j<=high)
	    {
	        dummy[k]=arr[j];
	        k++;
	        j++;
	    }
	    for(int q=0;q<arr.length;q++)
	    {
	        arr[q]=dummy[q];
	    }
	    
	}
}


OUTPUT:
Enter the size of the array
8
Enter the elements of the array
9 8 7 6 5 4 3 2
0 0 0 0 0 0 0 0

modified 3-Dec-21 4:28am.

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