1213-Intersection of Three Sorted Arrays.cpp

class Solution {
public:
    vector<int> arraysIntersection(vector<int>& arr1, vector<int>& arr2, vector<int>& arr3) 
    {
        int i=0,j=0,k=0;
        vector<int> result;
        while(i<arr1.size()&&j<arr2.size()&&k<arr3.size())
            if(arr1[i]==arr2[j]&&arr2[j]==arr3[k])
                result.push_back(arr1[i]),i++,j++,k++;
            else if(arr1[i]<=arr2[j]&&arr1[i]<=arr3[k])
                i++;
            else if(arr2[j]<=arr1[i]&&arr2[j]<=arr3[k])
                j++;
            else
                k++;
        return result;
    }
};