static int vowelPairs ( String s , int n ) {
  int cnt = 0 ;
  for ( int i = 0 ;
  i < n - 1 ;
  i ++ ) {
    if ( isVowel ( s . charAt ( i ) ) && isVowel ( s . charAt ( i + 1 ) ) ) cnt ++ ;
  }
  return cnt ;
}

static int vowelPairs ( String s , int n ) { int cnt = 0 ; for ( int i = 0 ; i < n - 1 ; i ++ ) { if ( isVowel ( s . charAt ( i ) ) && isVowel ( s . charAt ( i + 1 ) ) ) cnt ++ ; } return cnt ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (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: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) right: (method_invocation name: (identifier) arguments: (argument_list (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))))) consequence: (expression_statement (update_expression (identifier)))))) (return_statement (identifier))))