1 files changed, 27 insertions, 0 deletions
diff --git a/challenge-280/zapwai/rust/ch-1.rs b/challenge-280/zapwai/rust/ch-1.rs
new file mode 100644
index 0000000000..ab82a4d94f
--- /dev/null
+++ b/challenge-280/zapwai/rust/ch-1.rs
@@ -0,0 +1,27 @@
+fn main() {
+    let mystr = "abcddbca";
+    proc(mystr);
+    let mystr2 = "abcd";
+    proc(mystr2);
+    let mystr3 = "abcdabbb";
+    proc(mystr3);
+}
+
+fn proc(mystr : &str) {
+    println!( "Input: mystr");
+    let mut letter : char = '0';
+    let mut gotten : Vec<char> = Vec::new();
+    for l in mystr.chars() {
+	for g in &gotten {
+	    if l == *g {
+		letter = l;
+	    }
+	}
+	if letter != '0' {
+	    break;
+	} else {
+	    gotten.push(l);
+	}
+    }
+    println!( "Output: {letter}");
+}