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0027-remove-element.cpp

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class Solution {

public:

int removeElement(vector<int>& nums, int val) {

int n=nums.size();

int count=0;

for(int i=0;i<n;i++)

{

if(nums[i]!=val)

{

swap(nums[i],nums[count]);

count++;

}

}

return count;

}

};