public static void getPairsCount ( int [ ] arr , int sum ) {
  int count = 0 ;
  for ( int i = 0 ;
  i < arr . length ;
  i ++ ) for ( int j = i + 1 ;
  j < arr . length ;
  j ++ ) if ( ( arr [ i ] + arr [ j ] ) == sum ) count ++ ;
  System . out . printf ( "Count of pairs is %d" , count ) ;
}

public static void getPairsCount ( int [ ] arr , int sum ) { int count = 0 ; for ( int i = 0 ; i < arr . length ; i ++ ) for ( int j = i + 1 ; j < arr . length ; j ++ ) if ( ( arr [ i ] + arr [ j ] ) == sum ) count ++ ; System . out . printf ( " Count ▁ of ▁ pairs ▁ is ▁ % d " , count ) ; }
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