!759

!include #1002412 // Turing

static void tests() {
  elements();
}

static void elements() {
  repeat 5 {
    L<S> l = randomList();
    add(format3("how many elements are in the list *?", l), l(l));
  }
  
  repeat 2 {
    L<S> l = randomList(2, 4);
    add(format3("what is the first element in the list *?", l), first(l));
    add(format3("what is the last element in the list *?", l), last(l));
    add(format3("what is the 2nd element in the list *?", l), get(l, 1));
  }
}

static L<S> randomList() {
  int n = rand(5);
  ret randomList(n, n);
}

static L<S> randomList(int minLen, int maxLen) {
  int n = minLen + rand(maxLen-minLen+1);
  new L<S> l;
  repeat n { l.add(randomID(1)); }
  ret l;
}