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<?xml version="1.0"?>
<api>
  <query-continue>
    <allpages gapfrom="Reick" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1764" ns="0" title="Recursion Assignment">
        <revisions>
          <rev xml:space="preserve">&lt;language&gt;Java&lt;/language&gt;
Themengebiet: Rekursion, Optimierung, Reelle Zahlenfolgen.

[[Bild:RecursionAssignmentTree.png]]

Die reelle Zahlenfolge $a_n$ ist rekursiv definiert durch:

$$
a_{n} = \left\{
  \begin{array}{ll}
    1 &amp; \text{falls } n=0 \\
    a_{n-1}+\frac{1}{a_{n-1}+1} &amp; \text{falls } n&gt;0
  \end{array}
\right.
$$

Implementiere folgende Funktion:
&lt;run id=&quot;4f426aec2a743&quot;&gt;
static double a(int n) {
        // ...
}

System.out.println(a(100));
&lt;/run&gt;

&lt;check&gt;
int d = 13;
return int()a(100) == d;
&lt;/check&gt;

&lt;code id=&quot;4f426aec2a6dc&quot; hidden&gt;
static double a(int n) {
        if(n==0) {
            return 1;
        } else {
            double a_n = a(n-1);
            return a_n+(1/(a_n+1));
        }
}

System.out.println(a(100));
&lt;/code&gt;</rev>
        </revisions>
      </page>
      <page pageid="1203" ns="0" title="RegExp">
        <revisions>
          <rev xml:space="preserve">&lt;language&gt;Javascript&lt;/language&gt;
&lt;run id=&quot;4dac3920183d7&quot;&gt;
Eingabe = &quot;test@home.de&quot;;

if(Eingabe.match(/[^@\s]+@[^@\s]+\.[^@\s]+/))
  &quot;Gültige Emailadresse eingegeben&quot;; else &quot;Keine gültige Emailadresse eingegeben&quot;;
&lt;/run&gt;</rev>
        </revisions>
      </page>
    </pages>
  </query>
</api>