新建两个链表,一个无序,一个降序。然后将无序的链表插入到降序的链表中,并使原来降序的链表仍然保持降序。输入的整型数字以空格隔开
时间: 2024-06-21 20:01:47 浏览: 102
为了实现这个功能,我们首先需要定义链表节点和链表结构,然后创建两个链表,一个无序和一个已排序为降序。接着,我们将无序链表中的元素逐个插入到降序链表中,确保插入后仍保持降序。这里是一个简单的步骤描述:
1. 定义链表节点:
```cpp
struct ListNode {
int val;
ListNode* next;
ListNode(int x) : val(x), next(nullptr) {}
};
```
2. 创建无序链表和降序链表:
- 创建无序链表(`unorderedList`)并输入整数:
```cpp
ListNode* unorderedList = nullptr;
std::vector<int> input_numbers; // 读取空格分隔的整数
for (const auto& num : input_numbers) {
unorderedList = new ListNode(num);
unorderedList->next = unorderedList; // 初始化为循环链表
}
```
- 创建降序链表(`sortedList`)并添加数字(从大到小):
```cpp
ListNode* sortedList = nullptr;
for (int num : std::reverse(input_numbers.begin(), input_numbers.end())) {
ListNode* newNode = new ListNode(num);
if (sortedList == nullptr) {
sortedList = newNode;
} else {
ListNode* current = sortedList;
while (current->next != sortedList && current->val < newNode->val) {
current = current->next;
}
newNode->next = current->next;
current->next = newNode;
}
}
```
3. 插入无序链表到降序链表中:
```cpp
ListNode* currentUnordered = unorderedList;
while (currentUnordered != nullptr) {
ListNode* currentSorted = sortedList;
while (currentSorted != nullptr && currentSorted->val >= currentUnordered->val) {
currentSorted = currentSorted->next;
}
currentUnordered->next = currentSorted;
currentUnordered = currentUnordered->next;
}
```
现在,`unorderedList`已经按照降序链表`sortedList`的顺序插入了进去。相关问题:
阅读全文