1 files changed, 18 insertions, 0 deletions

diff --git a/top-interview-questions/easy/strings/03_first_unique_character.cc b/top-interview-questions/easy/strings/03_first_unique_character.cc
new file mode 100644
index 0000000..871f761
--- /dev/null
+++ b/top-interview-questions/easy/strings/03_first_unique_character.cc
@@ -0,0 +1,18 @@
+class Solution {
+public:
+    int firstUniqChar(string s) {
+        int count[256] = {};
+
+        for (char c : s) {
+            count[c]++;
+        }
+
+        for (size_t i = 0; i < s.size(); ++i) {
+            if (count[s[i]] == 1) {
+                return i;
+            }
+        }
+
+        return -1;
+    }
+};