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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/12.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/12.cpp')
| -rw-r--r-- | leetcode/cpp/12.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/leetcode/cpp/12.cpp b/leetcode/cpp/12.cpp new file mode 100644 index 0000000..e334895 --- /dev/null +++ b/leetcode/cpp/12.cpp @@ -0,0 +1,51 @@ +#include <string>
+
+using std::string;
+
+const char *roman_digits = "IVXLCDM";
+
+class Solution
+{
+public:
+ string intToRoman(int num)
+ {
+ string result;
+
+ int current_digit_index = 0;
+
+ while (num != 0)
+ {
+ const int digit = num % 10;
+ if (digit == 9)
+ {
+ result += roman_digits[current_digit_index + 2];
+ result += roman_digits[current_digit_index];
+ }
+ else if (digit <= 8 && digit >= 5)
+ {
+ for (int i = 0; i < digit - 5; i++)
+ {
+ result += roman_digits[current_digit_index];
+ }
+ result += roman_digits[current_digit_index + 1];
+ }
+ else if (digit == 4)
+ {
+ result += roman_digits[current_digit_index + 1];
+ result += roman_digits[current_digit_index];
+ }
+ else
+ {
+ for (int i = 0; i < digit; i++)
+ {
+ result += roman_digits[current_digit_index];
+ }
+ }
+
+ num /= 10;
+ current_digit_index += 2;
+ }
+
+ return string(result.crbegin(), result.crend());
+ }
+};
\ No newline at end of file |