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  1. import java.util.Scanner;
  2.  
  3. class CalDifference{
  4.  
  5. 	public static void main(String[] k){
  6.  
  7. 	int n, sumOfSq, sqOfSums, diff;
  8. 	int[] num; 
  9. 	int[] numSq;	
  10.  
  11. 	Scanner sc = new Scanner(System.in);
  12.  
  13. 	System.out.println("Enter the num of Elements to be entered");
  14. 	n = sc.nextInt();
  15.  
  16. 	num = new int[n];
  17. 	numSq = new int[n];
  18.  
  19. 	inputElements(num,n);
  20. 	sqOfElements(num,numSq,n);
  21. 	sumOfSq  = sum(numSq,n) * sum(numSq,n);
  22. 	sqOfSums = sum(num,n) * sum(num,n);	
  23. 	diff     = sumOfSq - sqOfSums;
  24.  
  25. 	}
  26.  
  27. 	public static void inputElements(int[] a, int n){
  28.  
  29. 		Scanner sc = new Scanner(System.in);
  30.  
  31. 		for(int i=0 ; i<n ; i++)
  32. 		{
  33. 		a[i] = sc.nextInt();
  34. 		}
  35. 	}
  36.  
  37. 	public static void sqOfElements(int[] a,int[] aSq, int n){
  38.  
  39. 	Scanner sc = new Scanner(System.in);
  40.  
  41. 		for(int i=0 ; i<n ; i++)
  42. 		{
  43. 		aSq[i] = a[i] * a[i];
  44. 		}
  45. 	}
  46.  
  47. 	public static int sum(int[] a, int n){
  48.  
  49. 	int sum = 0;
  50.  
  51. 		for(int i=0 ; i<n ; i++)
  52. 		{
  53. 		sum = sum + a[i];
  54. 		}
  55. 	return sum;
  56. 	}
  57. }
  58.  
  59.  
Runtime error #stdin #stdout 0.11s 212864KB
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stdin
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Standard input is empty
stdout
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Enter the num of Elements to be entered
https://ideone.com/0ca4a
language:
Java (HotSpot 12)
created:
14 years ago
visibility:
public

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