Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j] and the difference between i and jis at most k.
Subscribe to see which companies asked this question
class Solution {
public:
bool containsNearbyDuplicate(vector<int> &nums, int k) {
if(nums.size()==0) return false;
map<int, int> maps;
map<int, int>::iterator it;
for(int i=0; i<nums.size(); i++) {
it = maps.find(nums[i]);
if(it != maps.end()) {
int index = it->second;
if(i-index<=k) return true;
}
maps[nums[i]] = i;
}
return false;
}
};