static int longLenSub ( int [ ] arr , int n ) {
  HashMap < Integer , Integer > um = new HashMap < Integer , Integer > ( ) ;
  int longLen = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    int len = 0 ;
    if ( um . containsKey ( arr [ i ] - 1 ) && len < um . get ( arr [ i ] - 1 ) ) len = um . get ( arr [ i ] - 1 ) ;
    if ( um . containsKey ( arr [ i ] + 1 ) && len < um . get ( arr [ i ] + 1 ) ) len = um . get ( arr [ i ] + 1 ) ;
    um . put ( arr [ i ] , len + 1 ) ;
    if ( longLen < um . get ( arr [ i ] ) ) longLen = um . get ( arr [ i ] ) ;
  }
  return longLen ;
}

static int longLenSub ( int [ ] arr , int n ) { HashMap < Integer , Integer > um = new HashMap < Integer , Integer > ( ) ; int longLen = 0 ; for ( int i = 0 ; i < n ; i ++ ) { int len = 0 ; if ( um . containsKey ( arr [ i ] - 1 ) && len < um . get ( arr [ i ] - 1 ) ) len = um . get ( arr [ i ] - 1 ) ; if ( um . containsKey ( arr [ i ] + 1 ) && len < um . get ( arr [ i ] + 1 ) ) len = um . get ( arr [ i ] + 1 ) ; um . put ( arr [ i ] , len + 1 ) ; if ( longLen < um . get ( arr [ i ] ) ) longLen = um . get ( arr [ i ] ) ; } return longLen ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier) (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments (type_identifier) (type_identifier))) arguments: (argument_list)))) (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: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal)))) right: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal)))) right: (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (binary_expression left: (identifier) right: (decimal_integer_literal))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))))))) (return_statement (identifier))))