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数据恢复
查看>>
MySQL数据的主从复制、半同步复制和主主复制详解
查看>>
mysql数据碎片整理
查看>>
MySQL数据类型
查看>>
MySQL数据类型字节长度
查看>>
mysql数据被误删的恢复方案
查看>>
MySQL数据读写分离(MaxScale)上干货!!!
查看>>
mysql整库导入、导出
查看>>
mysql文本函数和数字函数
查看>>
Mysql新建用户和数据库并授权
查看>>
mysql日志
查看>>
mysql日志 事务问题_mysql因为事务日志问题无法启动
查看>>
mysql日志文件
查看>>
mysql日志管理学习笔记
查看>>
mysql日志问题定位实用命令
查看>>
MySQL日期时间函数大全
查看>>
mysql时间相减的问题
查看>>