rustlings: complete 18

1 files changed, 2 insertions, 0 deletions

diff --git a/rustlings/exercises/18_iterators/iterators5.rs b/rustlings/exercises/18_iterators/iterators5.rs
index 7e434cc..74f1c74 100644
--- a/rustlings/exercises/18_iterators/iterators5.rs
+++ b/rustlings/exercises/18_iterators/iterators5.rs
@@ -26,6 +26,7 @@ fn count_for(map: &HashMap<String, Progress>, value: Progress) -> usize {
 // TODO: Implement the functionality of `count_for` but with an iterator instead
 // of a `for` loop.
 fn count_iterator(map: &HashMap<String, Progress>, value: Progress) -> usize {
+    map.values().filter(|&&x| x == value).count()
     // `map` is a hash map with `String` keys and `Progress` values.
     // map = { "variables1": Complete, "from_str": None, … }
 }
@@ -45,6 +46,7 @@ fn count_collection_for(collection: &[HashMap<String, Progress>], value: Progres
 // TODO: Implement the functionality of `count_collection_for` but with an
 // iterator instead of a `for` loop.
 fn count_collection_iterator(collection: &[HashMap<String, Progress>], value: Progress) -> usize {
+    collection.iter().map(|m| count_iterator(m, value)).sum()
     // `collection` is a slice of hash maps.
     // collection = [{ "variables1": Complete, "from_str": None, … },
     //               { "variables2": Complete, … }, … ]