private static boolean checkLeft ( int l , int r , char [ ] arr ) {
  char baseLeftChar = arr [ l - 1 ] ;
  for ( int i = 0 ;
  i < l - 1 ;
  i ++ ) {
    if ( arr [ i ] == baseLeftChar ) return true ;
  }
  return false ;
}

private static boolean checkLeft ( int l , int r , char [ ] arr ) { char baseLeftChar = arr [ l - 1 ] ; for ( int i = 0 ; i < l - 1 ; i ++ ) { if ( arr [ i ] == baseLeftChar ) return true ; } return false ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (identifier) index: (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: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier))) consequence: (return_statement (true))))) (return_statement (false))))