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| author | crupest <crupest@outlook.com> | 2020-05-23 14:43:24 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2020-05-23 14:43:24 +0800 |
| commit | 9231bf55a11d2793bcbf14f883adc0f89a319ed6 (patch) | |
| tree | 4346e6819f0846ef2b04f91b9789a25f20088130 /cpp | |
| parent | d2c6f96bb3c94869251f7a709c783fcbbf82d276 (diff) | |
| download | solutions-9231bf55a11d2793bcbf14f883adc0f89a319ed6.tar.gz solutions-9231bf55a11d2793bcbf14f883adc0f89a319ed6.tar.bz2 solutions-9231bf55a11d2793bcbf14f883adc0f89a319ed6.zip | |
Add problem 260 .
Diffstat (limited to 'cpp')
| -rw-r--r-- | cpp/260-2.cpp | 26 | ||||
| -rw-r--r-- | cpp/260.cpp | 23 |
2 files changed, 49 insertions, 0 deletions
diff --git a/cpp/260-2.cpp b/cpp/260-2.cpp new file mode 100644 index 0000000..336d9e1 --- /dev/null +++ b/cpp/260-2.cpp @@ -0,0 +1,26 @@ +#include <vector>
+
+using std::vector;
+
+class Solution
+{
+public:
+ vector<int> singleNumber(vector<int> &nums)
+ {
+ int diff = 0;
+ for (auto i : nums)
+ {
+ diff ^= i;
+ }
+
+ int mask = diff & (-diff);
+
+ int result = 0;
+ for (auto i : nums)
+ {
+ result ^= (i & mask) ? i : 0;
+ }
+
+ return {result, result ^ diff};
+ }
+};
diff --git a/cpp/260.cpp b/cpp/260.cpp new file mode 100644 index 0000000..5679d52 --- /dev/null +++ b/cpp/260.cpp @@ -0,0 +1,23 @@ +#include <vector>
+#include <unordered_set>
+
+using std::vector;
+
+class Solution
+{
+public:
+ vector<int> singleNumber(vector<int> &nums)
+ {
+ std::unordered_set<int> s;
+ for (auto i : nums)
+ {
+ const auto result = s.find(i);
+ if (result == s.cend())
+ s.insert(i);
+ else
+ s.erase(result);
+ }
+
+ return vector<int>(s.cbegin(), s.cend());
+ }
+};
|