程序员Realeo
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(共161篇)
题解 | #删除有序链表中重复的元素-I#
import java.util.*; import java.util.stream.Collectors; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(i...
2023-08-18
0
348
题解 | #单链表的排序#
import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...
2023-08-17
0
333
题解 | #删除链表的倒数第n个节点#
import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...
2023-08-15
0
354
题解 | #链表中倒数最后k个结点#
import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...
2023-08-10
0
343
题解 | #链表中环的入口结点#
import java.util.*; /* public class ListNode { int val; ListNode next = null; ListNode(int val) { this.val = val; } } */ pub...
2023-08-10
0
261
题解 | #合并k个已排序的链表#
import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...
2023-08-10
0
266
题解 | #链表中的节点每k个一组翻转#
import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * public ListNode(int val) { * this.val = val; * ...
2023-08-10
0
270
题解 | #用户首次登录后次3日内活跃天数#
select a.id, count(b.id) from user_visit_log a left join user_visit_log b on a.id = b.id and timestampdiff (day, a.visit_date, b.v...
2023-07-27
0
221
题解 | #分群并计算群体人数#
select age_group, count(age_group) as user_count from ( select case when age < 20 then '20以下' ...
2023-07-26
2
239
题解 | #查询职位发布时间在2021年后或职位城市为上海
select job_id,boss_id,company_id from job_info where job_city = '上海' union select job_id,boss_id,company_id from job_info where ...
2023-07-26
0
178
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