Leetcode026. Remove Duplicates from Sorted Array

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class Solution {
public:
    int removeDuplicates(vector<int>& nums) {
        for(vector<int>::iterator it=nums.begin();it!=nums.end();)
        {
            int cur=*it;
            it++;
            while(it != nums.end() && *it == cur)nums.erase(it);
        }
        return nums.size();
    }
};