not knowing why run-time error...


  • 0
    I

    with [1,1] as input, the following code has run-time error, but why...

    class Solution {
    public:
        int removeDuplicates(vector<int>& nums) {
            int size = nums.size();
            if(size <= 1) return size;
            int target = nums[size-1];
            int length = size;
            for(size_t i = size-2; i >= 0; i--) {
                if(nums[i] == target) {
                    length--;
                    for(size_t j = i+1; j < size; j++) {
                        nums[j-1] = nums[j];
                    }
                }
                else {
                    target = nums[i];
                }
            }
            return length;
        }
    };
    

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