1 files changed, 0 insertions, 42 deletions
diff --git a/rustlings/exercises/18_iterators/iterators4.rs b/rustlings/exercises/18_iterators/iterators4.rs
deleted file mode 100644
index f153786..0000000
--- a/rustlings/exercises/18_iterators/iterators4.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-fn factorial(num: u64) -> u64 {
-    // TODO: Complete this function to return the factorial of `num` which is
-    // defined as `1 * 2 * 3 * … * num`.
-    // https://en.wikipedia.org/wiki/Factorial
-    //
-    // Do not use:
-    // - early returns (using the `return` keyword explicitly)
-    // Try not to use:
-    // - imperative style loops (for/while)
-    // - additional variables
-    // For an extra challenge, don't use:
-    // - recursion
-    (1..=num).reduce(|a, b| a * b).unwrap_or(1)
-}
-
-fn main() {
-    // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn factorial_of_0() {
-        assert_eq!(factorial(0), 1);
-    }
-
-    #[test]
-    fn factorial_of_1() {
-        assert_eq!(factorial(1), 1);
-    }
-    #[test]
-    fn factorial_of_2() {
-        assert_eq!(factorial(2), 2);
-    }
-
-    #[test]
-    fn factorial_of_4() {
-        assert_eq!(factorial(4), 24);
-    }
-}