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| author | crupest <crupest@outlook.com> | 2020-07-18 18:42:30 +0800 |
|---|---|---|
| committer | crupest <crupest@outlook.com> | 2020-07-18 18:42:30 +0800 |
| commit | 5cfd1b0f0e0a2f87b0fe96be009606a316837b46 (patch) | |
| tree | f59e0e62f6b0db5a0a8ea9a91801bcd9c8ebfcf6 | |
| parent | 43e2906b771b63202d2a153c3b1a510921260296 (diff) | |
| download | solutions-5cfd1b0f0e0a2f87b0fe96be009606a316837b46.tar.gz solutions-5cfd1b0f0e0a2f87b0fe96be009606a316837b46.tar.bz2 solutions-5cfd1b0f0e0a2f87b0fe96be009606a316837b46.zip | |
Add problem 917 .
| -rw-r--r-- | cpp/917.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/cpp/917.cpp b/cpp/917.cpp new file mode 100644 index 0000000..d01d795 --- /dev/null +++ b/cpp/917.cpp @@ -0,0 +1,45 @@ +#include <string>
+#include <cctype>
+#include <utility>
+
+using std::string;
+
+class Solution
+{
+public:
+ string reverseOnlyLetters(string s)
+ {
+ if (s.empty())
+ return s;
+
+ auto front = s.rend();
+ auto back = s.end();
+
+ bool move_front = true;
+ while (true)
+ {
+ if (move_front)
+ {
+ if (std::isalpha(*--front))
+ {
+ move_front = false;
+ }
+ }
+ else
+ {
+ if (std::isalpha(*--back))
+ {
+ std::swap(*front, *back);
+ move_front = true;
+ }
+ }
+
+ if (front.base() == back)
+ {
+ break;
+ }
+ }
+
+ return s;
+ }
+};
|