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/go/chapter_array_and_linkedlist/array.go

@@ -35,11 +35,11 @@ func insert(nums []int, num int, index int) {
 	for i := len(nums) - 1; i > index; i-- {
 		nums[i] = nums[i-1]
 	}
-	// 将 num 赋给 index 处元素
+	// 将 num 赋给 index 处的元素
 	nums[index] = num
 }
 
-/* 删除索引 index 处元素 */
+/* 删除索引 index 处的元素 */
 func remove(nums []int, index int) {
 	// 把索引 index 之后的所有元素向前移动一位
 	for i := index; i < len(nums)-1; i++ {