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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. class Solution{
  4. 	public:
  5. 	int removeDuplicates(vector<int>&nums){
  6. 		if(nums.empty())
  7. 		return 0;
  8.  
  9. 	int pos=1;
  10. 	for(int i=1;i<nums.size();i++){
  11. 		if(nums[i]!=nums[pos-1]){
  12. 			nums[pos]=nums[i];
  13. 			pos++;
  14. 		}
  15. 	}
  16. 	return pos;
  17. 	}
  18. };
  19. int main() {
  20. 	Solution obj;
  21. 	vector<int>nums={1,1,2,2,3,3,4};
  22. 	int k=obj.removeDuplicates(nums);
  23. 	cout<<"Number of unique elements:"<<k<<endl;
  24. 	cout<<"Array after removing duplicates:";
  25. 	for(int i=0;i<k;i++){
  26. 		cout<<nums[i]<<" ";
  27. 	}
  28.  
  29. 	return 0;
  30. }
Success #stdin #stdout 0s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
Number of unique elements:4
Array after removing duplicates:1 2 3 4
https://ideone.com/WUcsWY
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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