selectionSort

public static void selectionSort(int[] f){
  for(int i = f.length-1; i >= 0; --i){
    int maxId = indexOfGreatestElement(f,i);
    swap(f,maxId,i);
  }
}

public swap(int[] f, int x, int y){
  int tmp = f[x];
  f[x] = f[y];
  f[y] = tmp;
}

public static void indexOfGreatestElement(int[] f, int i){
  int maxIdx = 0; //maxWerte initialisieren
  for(int x = i; x> 0; --x){
    if(f[maxIdx] < f[x]){
      maxIdx = x;
    }
  }

  return maxIdx;
}