387

src/387.c

@@ -0,0 +1,17 @@
+#include <solution/387.h>
+#include <string.h>
+
+int firstUniqChar(char *s)
+{
+    int hash[26];
+    memset(hash, 0, sizeof(int) * 26);
+
+    for (int idx = 0; s[idx]; idx++)
+        hash[s[idx] - 'a']++;
+
+    for (int idx = 0; s[idx]; idx++)
+        if (hash[s[idx] - 'a'] == 1)
+            return idx;
+
+    return -1;
+}