static int [ ] mp ( String str ) {
  int n = str . length ( ) ;
  int [ ] a = new int [ n + 1 ] ;
  a [ 0 ] = - 1 ;
  int j = - 1 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    while ( j >= 0 && str . charAt ( i ) != str . charAt ( j ) ) j = a [ j ] ;
    j ++ ;
    a [ i + 1 ] = j ;
  }
  return a ;
}

static int [ ] mp ( String str ) { int n = str . length ( ) ; int [ ] a = new int [ n + 1 ] ; a [ 0 ] = - 1 ; int j = - 1 ; for ( int i = 0 ; i < n ; i ++ ) { while ( j >= 0 && str . charAt ( i ) != str . charAt ( j ) ) j = a [ j ] ; j ++ ; a [ i + 1 ] = j ; } return a ; }
(method_declaration (modifiers) type: (array_type element: (integral_type) dimensions: (dimensions)) 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: (array_type element: (integral_type) dimensions: (dimensions)) declarator: (variable_declarator name: (identifier) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (unary_expression operand: (decimal_integer_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (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 (while_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))) body: (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier))))) (expression_statement (update_expression (identifier))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (identifier))))) (return_statement (identifier))))