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| author | crupest <crupest@outlook.com> | 2021-02-23 21:07:19 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2021-02-23 21:07:19 +0800 |
| commit | d8f3b40085619cb680c8f227c65a1f5acc393223 (patch) | |
| tree | 6a38e3a6c79276fc396259ef962d17236dbed569 /leetcode/cpp/22.cpp | |
| parent | b0162802ad9723c678e495f29ca2f0fc0af2eff1 (diff) | |
| download | solutions-d8f3b40085619cb680c8f227c65a1f5acc393223.tar.gz solutions-d8f3b40085619cb680c8f227c65a1f5acc393223.tar.bz2 solutions-d8f3b40085619cb680c8f227c65a1f5acc393223.zip | |
Move leetcode solutions to subdir.
Diffstat (limited to 'leetcode/cpp/22.cpp')
| -rw-r--r-- | leetcode/cpp/22.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/leetcode/cpp/22.cpp b/leetcode/cpp/22.cpp new file mode 100644 index 0000000..e9467f1 --- /dev/null +++ b/leetcode/cpp/22.cpp @@ -0,0 +1,40 @@ +#include <string>
+#include <vector>
+
+using std::string;
+using std::vector;
+
+class Solution
+{
+public:
+ static void backtrack(vector<string> &result, string ¤t, int left, int right, int count, int string_length)
+ {
+ if (current.length() == string_length)
+ {
+ result.push_back(current);
+ return;
+ }
+
+ if (left < count)
+ {
+ current.push_back('(');
+ backtrack(result, current, left + 1, right, count, string_length);
+ current.pop_back();
+ }
+
+ if (right < left)
+ {
+ current.push_back(')');
+ backtrack(result, current, left, right + 1, count, string_length);
+ current.pop_back();
+ }
+ }
+
+ vector<string> generateParenthesis(int n)
+ {
+ vector<string> result;
+ string current;
+ backtrack(result, current, 0, 0, n, n * 2);
+ return std::move(result);
+ }
+};
\ No newline at end of file |