initial commit

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "deadfish"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "deadfish"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

src/main.rs

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+/****
+ * 
+ * Deadfish has 4 commands, each 1 character long:
+ * 
+ * i increments the value (initially 0)
+ * d decrements the value
+ * s squares the value
+ * o outputs the value into the return array
+ * Invalid characters should be ignored.
+ *
+ */
+
+fn main() {
+    println!("\n{:?}\n", parse("ioxiosydoioz"));
+}
+
+fn parse(code: &str) -> Vec<i32> {
+    let mut n: i32 = 0;
+    let mut v = vec![];
+
+    for c in code.chars() {
+        match c {
+            'i' => n += 1,
+            'd' => n -= 1,
+            's' => n *= n,
+            'o' => v.push(n),
+             _  => ()
+        }
+    }
+    v
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn sample_tests() {
+        assert_eq!(parse("iiisdoso"),
+            vec![8, 64]);
+        assert_eq!(parse("iiisdosodddddiso"),
+            vec![8, 64, 3600]);
+    }
+}