1 files changed, 14 insertions, 0 deletions
diff --git a/find-the-index-of-the-first-occurrence-in-a-string/src/main.rs b/find-the-index-of-the-first-occurrence-in-a-string/src/main.rs
new file mode 100644
index 0000000..51de786
--- /dev/null
+++ b/find-the-index-of-the-first-occurrence-in-a-string/src/main.rs
@@ -0,0 +1,14 @@
+fn main() {
+    println!("Hello, world!");
+}
+
+struct Solution;
+
+impl Solution {
+    pub fn str_str(haystack: String, needle: String) -> i32 {
+        match haystack.find(&needle) {
+            None => -1,
+            Some(e) => e as i32
+        }
+    }
+}