Re: [閒聊] 每日leetcode已回收
看板Marginalman作者smart0eddie (smart0eddie)時間1年前 (2024/07/02 10:32)推噓2(2推 0噓 0→)留言2則, 2人參與討論串435/1554 (看更多)
20240702
350. Intersection of Two Arrays II
Given two integer arrays nums1 and nums2, return an array of their
intersection. Each element in the result must appear as many times as it
shows in both arrays and you may return the result in any order.
要找兩個array共通的element
所以其中一個先計數
然後另一個逐一比對是否有在第一個出現
vector<int> intersect(vector<int>& nums1, vector<int>& nums2) {
int maxV1 = *max_element(nums1.begin(), nums1.end());
cout << maxV1 << endl;
vector<int> count(maxV1 + 1);
for (int num : nums1) {
count[num]++;
}
// for (int i = 0; i < maxV1 + 1; ++i) {
// cout << i << ", " << count[i] << "," << endl;
// }
vector<int> inter;
for (int num : nums2) {
if (num <= maxV1 && count[num]) {
inter.push_back(num);
count[num]--;
}
}
return inter;
}
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07/02 10:32,
1年前
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07/02 10:32, 1F
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07/02 10:36,
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