static void findTriplets ( int arr [ ] , int n , int sum ) {
  for ( int i = 0 ;
  i < n - 1 ;
  i ++ ) {
    HashSet < Integer > s = new HashSet < > ( ) ;
    for ( int j = i + 1 ;
    j < n ;
    j ++ ) {
      int x = sum - ( arr [ i ] + arr [ j ] ) ;
      if ( s . contains ( x ) ) System . out . printf ( "%d %d %d\n" , x , arr [ i ] , arr [ j ] ) ;
      else s . add ( arr [ j ] ) ;
    }
  }
}

static void findTriplets ( int arr [ ] , int n , int sum ) { for ( int i = 0 ; i < n - 1 ; i ++ ) { HashSet < Integer > s = new HashSet < > ( ) ; for ( int j = i + 1 ; j < n ; j ++ ) { int x = sum - ( arr [ i ] + arr [ j ] ) ; if ( s . contains ( x ) ) System . out . printf ( " % d ▁ % d ▁ % d \n " , x , arr [ i ] , arr [ j ] ) ; else s . add ( arr [ j ] ) ; } } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments)) arguments: (argument_list)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))))))) (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal) (identifier) (array_access array: (identifier) index: (identifier)) (array_access array: (identifier) index: (identifier))))) alternative: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))))))))))