static boolean isPermutedMatrix ( int mat [ ] [ ] , int n ) {
  String str_cat = "" ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    str_cat = str_cat + "-" + String . valueOf ( mat [ 0 ] [ i ] ) ;
  }
  str_cat = str_cat + str_cat ;
  for ( int i = 1 ;
  i < n ;
  i ++ ) {
    String curr_str = "" ;
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      curr_str = curr_str + "-" + String . valueOf ( mat [ i ] [ j ] ) ;
    }
    if ( str_cat . contentEquals ( curr_str ) ) {
      return false ;
    }
  }
  return true ;
}

static boolean isPermutedMatrix ( int mat [ ] [ ] , int n ) { String str_cat = " " ; for ( int i = 0 ; i < n ; i ++ ) { str_cat = str_cat + " - " + String . valueOf ( mat [ 0 ] [ i ] ) ; } str_cat = str_cat + str_cat ; for ( int i = 1 ; i < n ; i ++ ) { String curr_str = " " ; for ( int j = 0 ; j < n ; j ++ ) { curr_str = curr_str + " - " + String . valueOf ( mat [ i ] [ j ] ) ; } if ( str_cat . contentEquals ( curr_str ) ) { return false ; } } return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_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 (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (string_literal)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (decimal_integer_literal)) index: (identifier))))))))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (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: (block (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_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 (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (string_literal)) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier))))))))) (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (return_statement (false)))))) (return_statement (true))))