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Oct 22, 2025
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Create 3347. Maximum Frequency of an Element After Performing Operati… #914

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31 changes: 31 additions & 0 deletions 3347. Maximum Frequency of an Element After Performing Operations II
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Original file line number Diff line number Diff line change
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class Solution {
public:
int maxFrequency(vector<int>& nums, int k, int numOperations) {

int ans = 1;
int adjustable = 0;

// Containers for line sweep Algo
unordered_map<int, int> frequency;
set<int> candidates;
map<int, int> critical_points;

for(int num: nums) {
frequency[num]++;
critical_points[num - k]++;
critical_points[num + k + 1]--;
candidates.insert(num);
candidates.insert(num - k);
candidates.insert(num + k + 1);
}

for(int num: candidates) {
adjustable += critical_points.contains(num) ? critical_points[num] : 0;
int frequencyOfNum = frequency.contains(num) ? frequency[num] : 0;
int adjusted = adjustable - frequencyOfNum;
ans = max(ans, frequencyOfNum + min(adjusted, numOperations));
}

return ans;
}
};
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