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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.         System.out.println("Enter Elements");
  31.  
  32.                 for(int i=0 ; i<n ; i++)
  33.                 {
  34.                 a[i] = sc.nextInt();
  35.                 }
  36.         }
  37.  
  38.         public static void sqOfElements(int[] a,int[] aSq, int n){
  39.  
  40.                 for(int i=0 ; i<n ; i++)
  41.                 {
  42.                 aSq[i] = a[i] * a[i];
  43.                 }
  44.         }
  45.  
  46.         public static int sum(int[] a, int n){
  47.  
  48.         int sum = 0;
  49.  
  50.                 for(int i=0 ; i<n ; i++)
  51.                 {
  52.                 sum = sum + a[i];
  53.                 }
  54.         return sum;
  55.         }
  56. }
  57.  
  58.  
Runtime error #stdin #stdout 0.11s 212864KB
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stdin
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3123
stdout
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Enter the num of Elements to be entered
Enter Elements
https://ideone.com/HfP8A
language:
Java (HotSpot 12)
created:
14 years ago
visibility:
public

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