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和Java数据类型对应
查看>>
mysql和oorcale日期区间查询【含左右区间问题】
查看>>
MySQL和SQL入门
查看>>
mysql在centos下用命令批量导入报错_Variable ‘character_set_client‘ can‘t be set to the value of ‘---linux工作笔记042
查看>>
Mysql在Linux运行时新增配置文件提示:World-wrirable config file ‘/etc/mysql/conf.d/my.cnf‘ is ignored 权限过高导致
查看>>
Mysql在Windows上离线安装与配置
查看>>
MySQL在渗透测试中的应用
查看>>
Mysql在离线安装时启动失败:mysql服务无法启动,服务没有报告任何错误
查看>>
Mysql在离线安装时提示:error: Found option without preceding group in config file
查看>>
MySQL基于SSL的主从复制
查看>>
Mysql基本操作
查看>>
mysql基本操作
查看>>
mysql基础
查看>>
mysql基础---mysql查询机制
查看>>
MySQL基础5
查看>>
MySQL基础day07_mysql集群实例-MySQL 5.6
查看>>
Mysql基础命令 —— 数据库、数据表操作
查看>>
Mysql基础命令 —— 系统操作命令
查看>>
MySQL基础学习总结
查看>>
mysql基础教程三 —常见函数
查看>>