Why output limit exceeded?


  • 0
    S

    Here are my codes. I got output limit exceeded. But when i comment the second swap(), and delete the '&' before num, i got accept. Does anybody know why?

    //Codes output limit exceeded

    class Solution {
    public:
    vector<vector<int> > permuteUnique(vector<int> &num) {
    vector<vector<int> > ans;
    sort(num.begin(),num.end());
    ite(num,0,ans);
    return ans;
    }

    void ite(vector<int>& num,int idx,vector<vector<int>> &result)
    {
        if(idx==num.size()-1) result.push_back(num);
        else
        {
            for(int i=idx;i<num.size();i++)
            {
                if(num[idx]==num[i]&&i>idx) continue;
                swap(num[idx],num[i]);
                ite(num,idx+1,result);
                swap(num[idx],num[i]);
            }
        }
    }
    

    };

    //Codes accepted

    class Solution {
    public:
    vector<vector<int> > permuteUnique(vector<int> &num) {
    vector<vector<int> > ans;
    sort(num.begin(),num.end());
    ite(num,0,ans);
    return ans;
    }

    void ite(vector<int> num,int idx,vector<vector<int>> &result)
    {
        if(idx==num.size()-1) result.push_back(num);
        else
        {
            for(int i=idx;i<num.size();i++)
            {
                if(num[idx]==num[i]&&i>idx) continue;
                swap(num[idx],num[i]);
                ite(num,idx+1,result);
                //swap(num[idx],num[i]);
            }
        }
    }
    

    };


  • 0

    I also got it " Time Limit Exceeded", Had you solved?


  • 0
    B

    Had you solved this? I also got it and perhaps we use same algorithm.


  • 0

    mine is code error


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