部分数据 1distinct去重
select distinct job from tb_emp;select * from tb_emp where id in (1,2,3);
select * from tb_emp where id between 1 and 5;
select * from tb_emp where name like __; #下划线匹配单个字符, %匹配任意多个字符select min(entrydate) from tb_e…
题目: 题解:
class Solution {public ListNode reverseBetween(ListNode head, int left, int right) {// 设置 dummyNode 是这一类问题的一般做法ListNode dummyNode new ListNode(-1);dummyNode.next head;ListNode pre dummyNode;for (int i 0; …