Data commit

Task/CUSIP/Rust/cusip.rust

@@ -0,0 +1,42 @@
+fn cusip_check(cusip: &str) -> bool {
+    if cusip.len() != 9 {
+        return false;
+    }
+
+    let mut v = 0;
+    let capital_cusip = cusip.to_uppercase();
+    let char_indices = capital_cusip.as_str().char_indices().take(7);
+
+    let total = char_indices.fold(0, |total, (i, c)| {
+        v = match c {
+            '*' => 36,
+            '@' => 37,
+            '#' => 38,
+            _ if c.is_digit(10) => c.to_digit(10).unwrap() as u8,
+            _ if c.is_alphabetic() => (c as u8) - b'A' + 1 + 9,
+            _ => v,
+        };
+
+        if i % 2 != 0 {
+            v *= 2
+        }
+        total + (v / 10) + v % 10
+    });
+
+    let check = (10 - (total % 10)) % 10;
+    (check.to_string().chars().nth(0).unwrap()) == cusip.chars().nth(cusip.len() - 1).unwrap()
+}
+
+fn main() {
+    let codes = [
+        "037833100",
+        "17275R102",
+        "38259P508",
+        "594918104",
+        "68389X106",
+        "68389X105",
+    ];
+    for code in &codes {
+        println!("{} -> {}", code, cusip_check(code))
+    }
+}