题目:

题解:
class Solution {
public:
vector<int> singleNumber(vector<int>& nums) {
int xorsum = 0;
for (int num: nums) {
xorsum ^= num;
}
// 防止溢出
int lsb = (xorsum == INT_MIN ? xorsum : xorsum & (-xorsum));
int type1 = 0, type2 = 0;
for (int num: nums) {
if (num & lsb) {
type1 ^= num;
}
else {
type2 ^= num;
}
}
return {type1, type2};
}
};








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