博客
关于我
80. Remove Duplicates from Sorted Array II
阅读量:424 次
发布时间:2019-03-06

本文共 1592 字,大约阅读时间需要 5 分钟。

Given a sorted array nums, remove the duplicates  such that duplicates appeared at most twice and return the new length.

Do not allocate extra space for another array, you must do this by modifying the input array  with O(1) extra memory.

Example 1:

Given nums = [1,1,1,2,2,3],Your function should return length = 5, with the first five elements of nums being 1, 1, 2, 2 and 3 respectively.It doesn't matter what you leave beyond the returned length.

Example 2:

Given nums = [0,0,1,1,1,1,2,3,3],Your function should return length = 7, with the first seven elements of nums being modified to 0, 0, 1, 1, 2, 3 and 3 respectively.It doesn't matter what values are set beyond the returned length.

Clarification:

Confused why the returned value is an integer but your answer is an array?

Note that the input array is passed in by reference, which means modification to the input array will be known to the caller as well.

Internally you can think of this:

// nums is passed in by reference. (i.e., without making a copy)int len = removeDuplicates(nums);// any modification to nums in your function would be known by the caller.// using the length returned by your function, it prints the first len elements.for (int i = 0; i < len; i++) {    print(nums[i]);}
 

AC code:

class Solution {public:    int removeDuplicates(vector
& nums) { int i = 0; for (auto n : nums) { if (i < 2 || n > nums[i-2]) nums[i++] = n; } return i; }};
Runtime: 
8 ms, faster than 100.00% of C++ online submissions for Remove Duplicates from Sorted Array II.

 

 

转载地址:http://uzxuz.baihongyu.com/

你可能感兴趣的文章
mysql备份与恢复
查看>>
mysql备份工具xtrabackup
查看>>
mysql备份恢复出错_尝试备份/恢复mysql数据库时出错
查看>>
mysql复制内容到一张新表
查看>>
mysql复制表结构和数据
查看>>
mysql复杂查询,优质题目
查看>>
MySQL外键约束
查看>>
MySQL多表关联on和where速度对比实测谁更快
查看>>
MySQL多表左右连接查询
查看>>
mysql大批量删除(修改)The total number of locks exceeds the lock table size 错误的解决办法
查看>>
mysql如何做到存在就更新不存就插入_MySQL 索引及优化实战(二)
查看>>
mysql如何删除数据表,被关联的数据表如何删除呢
查看>>
MySQL如何实现ACID ?
查看>>
mysql如何记录数据库响应时间
查看>>
MySQL子查询
查看>>
Mysql字段、索引操作
查看>>
mysql字段的细节(查询自定义的字段[意义-行列转置];UNION ALL;case-when)
查看>>
mysql字段类型不一致导致的索引失效
查看>>
mysql字段类型介绍
查看>>
mysql字段解析逗号分割_MySQL逗号分割字段的行列转换技巧
查看>>