PriorityQueue and ternary operator

Question

In method_one:

1. PriorityQueue<Integer> bigger = lower.size() > higher.size() ? lower : higher;
2. PriorityQueue<Integer> smaller = lower.size() > higher.size() ? higher : lower;

In method_two:

3. PriorityQueue<Integer> bigger = lower.size() > higher.size() ? lower : higher;
4. PriorityQueue<Integer> smaller = lower.size() < higher.size() ? lower : higher;

Here lower is Max_heap priority queue, and higher is Min_heap priority queue.

Line 2 and 4 are same, but getting wrong answers. And getting right answer when using line 2 at line 4. Why this strange behaviour, even they are same?

Answer 1

in line 2:

if lower.size() == higher.size() then choose lower

in line 4:

if lower.size() == higher.size() then chose higher

thats the difference. You get different answer if you something do wrong when work with higher priority queue or lower priority queue.

From @Andreas comment in question this line added:

The inverse of > is <=, not <