public static int squareFree ( int n ) {
  int cnt = 0 ;
  for ( int i = 1 ;
  ;
  i ++ ) {
    boolean isSqFree = true ;
    for ( int j = 2 ;
    j * j <= i ;
    j ++ ) {
      if ( i % ( j * j ) == 0 ) {
        isSqFree = false ;
        break ;
      }
    }
    if ( isSqFree == true ) {
      cnt ++ ;
      if ( cnt == n ) return i ;
    }
  }
}

public static int squareFree ( int n ) { int cnt = 0 ; for ( int i = 1 ; ; i ++ ) { boolean isSqFree = true ; for ( int j = 2 ; j * j <= i ; j ++ ) { if ( i % ( j * j ) == 0 ) { isSqFree = false ; break ; } } if ( isSqFree == true ) { cnt ++ ; if ( cnt == n ) return i ; } } }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (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))) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (boolean_type) declarator: (variable_declarator name: (identifier) value: (true))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (identifier)))) right: (decimal_integer_literal))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (false))) (break_statement))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (true))) consequence: (block (expression_statement (update_expression (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) consequence: (return_statement (identifier)))))))))