[old] Index Power

Undefined

Vorgegeben werden ein Array mit positiven Zahlen und eine Zahl N. Du sollst die N-te Potenz des Arrayelementes mit dem Index N finden.
Falls N ausserhalb des Arrays liegt gebe -1 als Ergebnis zurück. Vergiss nicht, dass das erste Element eines Arrays den Index 0 hat.

Sehen wir uns zwei Beispiele an:
- array = [1, 2, 3, 4] und N = 2, dann ist das Ergebnis 3² == 9;
- array = [1, 2, 3] und N = 3, aber N liegt ausserhalb des Arrays, also ist das Ergebnis -1.

Eingabe: Zwei Argumente. Ein Array als Liste mit Integern und eine Zahl als Integer.

Ausgabe: Das Ergebnis als Integer Wert.

Beispiele:

indexPower([1, 2, 3, 4], 2) == 9
indexPower([1,...

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