feat: Revised the book (#978)

* Sync recent changes to the revised Word.

* Revised the preface chapter

* Revised the introduction chapter

* Revised the computation complexity chapter

* Revised the chapter data structure

* Revised the chapter array and linked list

* Revised the chapter stack and queue

* Revised the chapter hashing

* Revised the chapter tree

* Revised the chapter heap

* Revised the chapter graph

* Revised the chapter searching

* Reivised the sorting chapter

* Revised the divide and conquer chapter

* Revised the chapter backtacking

* Revised the DP chapter

* Revised the greedy chapter

* Revised the appendix chapter

* Revised the preface chapter doubly

* Revised the figures

codes/swift/chapter_heap/my_heap.swift

@@ -86,7 +86,7 @@ class MaxHeap {
         if isEmpty() {
             fatalError("堆为空")
         }
-        // 交换根节点与最右叶节点（即交换首元素与尾元素）
+        // 交换根节点与最右叶节点（交换首元素与尾元素）
         swap(i: 0, j: size() - 1)
         // 删除节点
         let val = maxHeap.remove(at: size() - 1)