2 files changed, 22 insertions, 0 deletions
diff --git a/find-the-index-of-the-first-occurrence-in-a-string/Cargo.toml b/find-the-index-of-the-first-occurrence-in-a-string/Cargo.toml
new file mode 100644
index 0000000..0badc0f
--- /dev/null
+++ b/find-the-index-of-the-first-occurrence-in-a-string/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "find-the-index-of-the-first-occurrence-in-a-string"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
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
+        }
+    }
+}