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bool containsNearbyDuplicate(vector<int>& nums, int k) {
if(nums.size() == 0) return false;
if(nums.size() == 1) return false;
if(k > nums.size()){
k = nums.size();
}
for(int i = 0; i+k < nums.size(); i++){
for(int j = i+1; j <= i+k ; j++){
if(j < nums.size()){
if(nums[i] == nums[j]){
return true;
}
}
}
}
return false;
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