Force buckle 2326, 197

197, SQL query

Table: Weather

+---------------+---------+| Column Name | Type |+---------------+---------+| id | int || recordDate | date || temperature | int |+---------------+---------+id is the primary key of this tableThe table contains temperature information for a specific date

Write an SQL query to find the id of all dates with a warmer temperature than the previous (yesterday's) date.

Return results No order required.

The query result format is as follows.

Example 1:

Enter:Weather table:+----+------------+-------------+| id | recordDate | Temperature |+----+------------+-------------+| 1 | 2015-01-01 | 10 || 2 | 2015-01-02 | 25 || 3 | 2015-01-03 | 20 || 4 | 2015-01-04 | 30 |+----+------------+-------------+Output:+----+| id |+----+| 2 || 4 |+----+Explanation:2015-01-02 the temperature was higher than the previous day (10 -> 25)2015-01-04 the temperature was higher than the previous day (20 -> 30)

select a.id from Weather as a, Weather as bwhere to_days(a.recordDate)=to_days(b.recordDate)+1 and a.Temperature>b.Temperature

2326 (movement of linked list)

You are given two integers: m and n, representing the dimensions of the matrix.

Also give you the head node head of a linked list of integers.

Please generate a spiral matrix of size m x n that contains all the integers in the linked list.The integers in the linked list start from the upper left corner of the matrix and are filled clockwise in spiral order.If there are any remaining spaces, they are padded with -1.

Returns the resulting matrix.

Example 1:

Input: m = 3, n = 5, head = [3,0,2,6,8,1,7,9,4,2,5,5,0]
Output:[[3,0,2,6,8],[5,0,-1,-1,1],[5,2,4,9,7]]
Explanation: The above figure shows the linked listHow are the integers arranged in the matrix.
Note that the remaining spaces in the matrix are padded with -1.
Example 2:

Input: m = 1, n = 4, head = [0,1,2]
Output: [[0,1,2,-1]]
Explanation: The above picture showsIt shows how the integers in the linked list are arranged from left to right in the matrix.
Note that the remaining spaces in the matrix are padded with -1.

Source: LeetCode
Link: https://leetcode.cn/problems/spiral-matrix-iv
The copyright belongs to LeetCode.com.For commercial reprints, please contact the official authorization, and for non-commercial reprints, please indicate the source.

/*** Definition for singly-linked list.* public class ListNode {* int val;*ListNode next;* ListNode() {}* ListNode(int val) { this.val = val; }* ListNode(int val, ListNode next) { this.val = val; this.next = next; }* }*/class Solution {public int[][] spiralMatrix(int ​​m, int n, ListNode head) {// 1. Create a new array, fill it with -1 by defaultint[][] arr = new int[m][n];for(int i= 0;i=left;i--){if(head==null) return arr;arr[bottom][i]=head.val;head=head.next;}// move the lower bound upbottom--;}// 3.4 ↑if(top <= bottom&&left<=right) {for(int i =bottom;i>=top;i--){if(head==null) return arr;arr[i][left]=head.val;head=head.next;}// move left border to rightleft++;}}return arr;}}