static int lps ( String str ) {
  int n = str . length ( ) ;
  int L [ ] [ ] = new int [ n ] [ n ] ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) L [ i ] [ i ] = 1 ;
  for ( int cl = 2 ;
  cl <= n ;
  cl ++ ) {
    for ( int i = 0 ;
    i < n - cl + 1 ;
    i ++ ) {
      int j = i + cl - 1 ;
      if ( str . charAt ( i ) == str . charAt ( j ) && cl == 2 ) L [ i ] [ j ] = 2 ;
      else if ( str . charAt ( i ) == str . charAt ( j ) ) L [ i ] [ j ] = L [ i + 1 ] [ j - 1 ] + 2 ;
      else L [ i ] [ j ] = Integer . max ( L [ i ] [ j - 1 ] , L [ i + 1 ] [ j ] ) ;
    }
  }
  return L [ 0 ] [ n - 1 ] ;
}

static int lps ( String str ) { int n = str . length ( ) ; int L [ ] [ ] = new int [ n ] [ n ] ; for ( int i = 0 ; i < n ; i ++ ) L [ i ] [ i ] = 1 ; for ( int cl = 2 ; cl <= n ; cl ++ ) { for ( int i = 0 ; i < n - cl + 1 ; i ++ ) { int j = i + cl - 1 ; if ( str . charAt ( i ) == str . charAt ( j ) && cl == 2 ) L [ i ] [ j ] = 2 ; else if ( str . charAt ( i ) == str . charAt ( j ) ) L [ i ] [ j ] = L [ i + 1 ] [ j - 1 ] + 2 ; else L [ i ] [ j ] = Integer . max ( L [ i ] [ j - 1 ] , L [ i + 1 ] [ j ] ) ; } } return L [ 0 ] [ n - 1 ] ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier)) dimensions: (dimensions_expr (identifier))))) (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: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (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 (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: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (decimal_integer_literal))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) consequence: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (binary_expression left: (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (decimal_integer_literal)))) alternative: (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (identifier)) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) (array_access array: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) index: (identifier)))))))))))) (return_statement (array_access array: (array_access array: (identifier) index: (decimal_integer_literal)) index: (binary_expression left: (identifier) right: (decimal_integer_literal))))))