1. 1. Introduce
  2. 2. Number
    1. 2.1. BigNumber
  3. 3. String
    1. 3.1. EditDistance
    2. 3.2. Literal-expression
    3. 3.3. Similar
  4. 4. Map
    1. 4.1. HashMap
    2. 4.2. CurrentHashMap(zk)
    3. 4.3. CopyonWritMap(zk)
    4. 4.4. LinkedHashMap(LRU)
  5. 5. Tree
    1. 5.1. Traverse
      1. 5.1.1. Depth-First
      2. 5.1.2. Breed-First
    2. 5.2. BinaryTree
      1. 5.2.1. BasicBinaryTree
      2. 5.2.2. BinarySearchTree
        1. 5.2.2.1. RedBlackTree
          1. 5.2.2.1.1. Redblack and AVL Tree
          2. 5.2.2.1.2. TreeMap
    3. 5.3. Heap
    4. 5.4. TreeSet
  6. 6. Quene
    1. 6.1. Deque
    2. 6.2. PriorityQueue
  7. 7. List
    1. 7.1. Array&LinkedList
    2. 7.2. SkipList

Breed-First