345

2025-07-20 11:06:49 +08:00
parent f54c320ebf
commit cb718130f7
3 changed files with 72 additions and 0 deletions
--- a/src/345.c
+++ b/src/345.c
@@ -0,0 +1,32 @@
+#include <solution/345.h>
+#include <string.h>
+
+#define equal(x)                                                                                                       \
+    ((x) == 'a' || (x) == 'A' || (x) == 'e' || (x) == 'E' || (x) == 'i' || (x) == 'I' || (x) == 'o' || (x) == 'O' ||   \
+     (x) == 'u' || (x) == 'U')
+
+#define swap(x, y, cb)                                                                                                 \
+    do                                                                                                                 \
+    {                                                                                                                  \
+        char t = x;                                                                                                    \
+        x = y;                                                                                                         \
+        y = t;                                                                                                         \
+        cb;                                                                                                            \
+    } while (0)
+
+char *reverseVowels(char *s)
+{
+    for (int i = 0, j = strlen(s) - 1, f = 1; i < j;)
+    {
+        if (f && equal(s[i]))
+            f = 0;
+        else if (f)
+            i++;
+        else if (!f && equal(s[j]))
+            swap(s[i], s[j], (f = 1, i++, j--));
+        else
+            j--;
+    }
+
+    return s;
+}