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InsertSort 

插入排序算法，比如打扑克牌的算法时，按照从左到右，找到对应的位置插入排序

最重要的是位置移动

找到对应位置值

#include "iostream"
#include "bits/stdc++.h"using namespace std;void sort(vector<int>& nums) {if(nums.size()==0) return;for(int i=1;i<nums.size();i++) {if(nums[i]<nums[i-1]) {int temp = nums[i];int j = i;while(j>0&&nums[j-1]>temp) {nums[j] = nums[j-1];j--;}nums[j] = temp;}}
}int main(int argc,char** argv) {vector<int> nums {2,3,2,12,19,23};sort(nums);for(int i:nums) {cout<<i<<" "<<endl;}return 0;
}

链表的插入排序算法：

没有灵魂的画手，SIX，SIX，SIX！

#include <string.h>
#include <iostream>
#include <bits/stdc++.h>using namespace std;struct ListNode {int val;struct ListNode *next;ListNode(int v):val(v) {}
};class Solution {
public:ListNode* insertionSortList(ListNode* head) {// 虚拟的头节点值。ListNode* dumb = new ListNode(-1);dumb->next = head;// head是最后一个已经排好序的位置// head->next是第一个待排序的位置while (head && head->next) {if (head->val > head->next->val) {// 从第一个节点的位置来进行遍历ListNode* p = dumb;while (p->next->val < head->next->val)  {p = p -> next;}ListNode* cur = head->next;head->next = cur->next;cur->next = p->next;p->next = cur;}else {head = head->next;}}// 删除虚拟的头指针节点值。head = dumb->next;delete dumb;return head;}
};int main(int argc, char* argv[]) {ListNode *head = new ListNode(1);ListNode *h2 = new ListNode(4);ListNode *h3 = new ListNode(3);ListNode *h4 = new ListNode(2);ListNode *h5 = new ListNode(5);ListNode *h6 = new ListNode(2);head->next = h2;h2->next = h3;h3->next = h4;h4->next = h5;h5->next = h6;h6->next = nullptr;Solution s;ListNode *res;res = s.insertionSortList(head);while(res!=nullptr) {cout<<res->val<<" ";res= res->next;}return 0;
}