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// input: [["a", "b", "c", "d"]]
// output: ["c", "b", "a", "d"]
package {
public class ArrayAccess {
public static function main(ar:Array):Array {
var aa:ArrayAccess = new ArrayAccess();
return aa.f(ar, 2);
}
private function f(ar:Array, num:Number):Array{
var x:String = ar[0];
var y:String = ar[num % ar.length];
ar[0] = y;
ar[num] = x;
return ar;
}
}
}
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