class Sides {
int a;
int b;
int c;
Sides(int a, int b, int c) {
this.a = a;
this.b = b;
this.c = c;
}
}
public int compare(Sides o1, Sides o2) {
int[] o1Sides = new int[] { o1.a, o1.b, o1.c };
Arrays.sort(o1Sides);
int[] o2Sides = new int[] { o2.a, o2.b, o2.c };
Arrays.sort(o2Sides);
for (int i = 0; i < o1Sides.length; i++)
if (o1Sides[i] != o2Sides[i])
return -1;
return 0;
}
public int countDistinctTriangles(ArrayList<Sides> arr) {
if (arr.size() == 0)
return 0;
Collections.sort(arr, new Comparator<Sides>() {
@Override
public int compare(Sides o1, Sides o2) {
int[] o1Sides = new int[] { o1.a, o1.b, o1.c };
Arrays.sort(o1Sides);
int[] o2Sides = new int[] { o2.a, o2.b, o2.c };
Arrays.sort(o2Sides);
for (int i = 0; i < o1Sides.length; i++)
if (o1Sides[i] != o2Sides[i])
return -1;
return 0;
}
});
int count = 1;
for (int i = 1; i < arr.size(); i++) {
if (compare(arr.get(i), arr.get(i - 1)) != 0)
count++;
}
return count;
}

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