LeetCode

 27. Remove Element

Problem's Link

 ----------------------------------------------------------------------------

Mean: 

移除数组中的指定元素.

analyse:

Time complexity: O(N)

 

view code

/**
* -----------------------------------------------------------------
* Copyright (c) 2016 crazyacking.All rights reserved.
* -----------------------------------------------------------------
*       Author: crazyacking
*       Date  : 2016-02-19-16.20
*/
#include <queue>
#include <cstdio>
#include <set>
#include <string>
#include <stack>
#include <cmath>
#include <climits>
#include <map>
#include <cstdlib>
#include <iostream>
#include <vector>
#include <algorithm>
#include <cstring>
using namespace std;
typedef long long(LL);
typedef unsigned long long(ULL);
const double eps(1e-8);

class Solution
{
public:
   int removeElement(vector<int>& nums, int val)
   {
       int cnt=0;
       for(int i=0;i<nums.size();++i)
           if(nums[i]==val)
               ++cnt;
           else
               nums[i-cnt]=nums[i];
       return (nums.size()-cnt);
   }
};

int main()
{
   Solution solution;
   int n,val;
   while(cin>>n>>val)
   {
       vector<int> ve;
       for(int i=0;i<n;++i)
       {
           int tmp;
           cin>>tmp;
           ve.push_back(tmp);
       }
       cout<<solution.removeElement(ve,val)<<endl;
   }
   return 0;
}
/*

*/
原文地址:https://www.cnblogs.com/crazyacking/p/5201523.html