static void printCombinations ( int a [ ] , int n , int m ) {
  for ( int i = 0 ;
  i < ( 1 << n ) ;
  i ++ ) {
    int sum = 0 ;
    int num = 1 << ( n - 1 ) ;
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      if ( ( i & num ) > 0 ) sum += a [ j ] ;
      else sum += ( - 1 * a [ j ] ) ;
      num = num >> 1 ;
    }
    if ( sum % m == 0 ) {
      num = 1 << ( n - 1 ) ;
      for ( int j = 0 ;
      j < n ;
      j ++ ) {
        if ( ( i & num ) > 0 ) System . out . print ( "+" + a [ j ] + " " ) ;
        else System . out . print ( "-" + a [ j ] + " " ) ;
        num = num >> 1 ;
      }
      System . out . println ( ) ;
    }
  }
}

static void printCombinations ( int a [ ] , int n , int m ) { for ( int i = 0 ; i < ( 1 << n ) ; i ++ ) { int sum = 0 ; int num = 1 << ( n - 1 ) ; for ( int j = 0 ; j < n ; j ++ ) { if ( ( i & num ) > 0 ) sum += a [ j ] ; else sum += ( - 1 * a [ j ] ) ; num = num >> 1 ; } if ( sum % m == 0 ) { num = 1 << ( n - 1 ) ; for ( int j = 0 ; j < n ; j ++ ) { if ( ( i & num ) > 0 ) System . out . print ( " + " + a [ j ] + " ▁ " ) ; else System . out . print ( " - " + a [ j ] + " ▁ " ) ; num = num >> 1 ; } System . out . println ( ) ; } } }
(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: (parenthesized_expression (binary_expression left: (decimal_integer_literal) right: (identifier)))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (decimal_integer_literal) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal))) consequence: (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier)))) alternative: (expression_statement (assignment_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (unary_expression operand: (decimal_integer_literal)) right: (array_access array: (identifier) index: (identifier))))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (decimal_integer_literal) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (decimal_integer_literal))) consequence: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (string_literal) right: (array_access array: (identifier) index: (identifier))) right: (string_literal))))) alternative: (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (string_literal) right: (array_access array: (identifier) index: (identifier))) right: (string_literal)))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list)))))))))