What is the error ??? its shows error in line 1034
Arun
960

Line 1034: Char 9: runtime error: reference binding to null pointer of type 'std::vector<int, std::allocator>' (stl_vector.h)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior /usr/bin/../lib/gcc/x86_64-linux-gnu/9/../../../../include/c++/9/bits/stl_vector.h:1043:9

class Solution {
public:
    vector<vector<int>> merge(vector<vector<int>>& intervals) {
       vector<vector<int>> v;
        int j,i;
        i=j=0;
        
        v[0].push_back(intervals[0][0]);
        
        for(i=1;i<intervals.size();i++)
        {
          
            if(intervals[i][0] < intervals[i-1][1] && i < intervals.size())
            {
                i++;
                
                while(intervals[i][0] < intervals[i-1][1] && i < intervals.size())
                {
                    i++;
                }
                
                v[j].push_back(intervals[i-1][1]);
                
                j++;
                if(i < intervals.size())
                    v[j].push_back(intervals[i][0]);
            }
            else{
                v[j].push_back(intervals[i][1]);
                j++;
                if(i < intervals.size())
                    v[j].push_back(intervals[i][0]);
            }
            
        }
    
    return v;
    }
};
Comments (1)