data[i] = rand.IntN(100)
	}
	if IntsAreSorted(data) {
		t.Fatalf("terrible rand.rand")
	}
	Ints(data)
	if !IntsAreSorted(data) {
		t.Errorf("sort didn't sort - 1M ints")
	}
}

func TestReverseSortIntSlice(t *testing.T) {
	data := ints
	data1 := ints
	a := IntSlice(data[0:])
	Sort(a)
	r := IntSlice(data1[0:])
	Sort(Reverse(r))
	for i := 0; i < len(data); i++ {
		if a[i] != r[len(data)-1-i] {