problem

​575. Distribute Candies​

 理解题意:主要是计算candies的种类数。

如果大于candies数目的一半,则返回一半的值,否则,返回candies的种类数。

solution1:

class Solution {
public:
int distributeCandies(vector<int>& candies) {
set<int> myset;//unordered_set<int> myset;
for(int i=0; i<candies.size(); i++)
{
myset.insert(candies[i]);
}
return min(myset.size(), candies.size()/2);
}
};

注意掌握set的用法;

solution2:

class Solution {
public:
int distributeCandies(vector<int>& candies) {
return min(unordered_set<int>(candies.begin(), candies.end()).size(), candies.size()/2);
}
};

 

re

1. ​​Leetcode_easy_575. Distribute Candies​​;

end