Function insert

tests/test_common_heap.rs:76–85

()

#[test]
fn insert() {
    //normal
    let t = vec![4, 1, 3, 2, 16, 9, 10, 14, 8, 7];
    let mut heap = max_heap::BinaryHeap::new(t);
    // data layout:
    //   vec![16, 14, 10, 8, 7, 9, 3, 2, 4, 1];
    heap.insert(100);
    let data = heap.keys_slice();
    assert_eq!(data, vec![100, 16, 10, 8, 14, 9, 3, 2, 4, 1, 7])
}