[rust] Acronym

1 files changed, 19 insertions, 0 deletions

diff --git a/rust/acronym/src/lib.rs b/rust/acronym/src/lib.rs
new file mode 100644
index 0000000..dcd4615
--- /dev/null
+++ b/rust/acronym/src/lib.rs
@@ -0,0 +1,19 @@
+fn to_acronym(word: &str) -> Option<String> {
+    if word.chars().all(|c| c.is_uppercase() || !c.is_alphabetic())
+        || word.chars().all(|c| c.is_lowercase() || !c.is_alphabetic())
+    {
+        word.chars()
+            .find(|c| c.is_alphabetic())
+            .map(|c| c.to_uppercase().to_string())
+    } else {
+        Some(word.chars().filter(|c| c.is_uppercase()).collect())
+    }
+}
+
+pub fn abbreviate(phrase: &str) -> String {
+    phrase
+        .split(|c| " -:,".contains(c)) // Split into words
+        .filter(|s| !s.is_empty())
+        .flat_map(to_acronym)
+        .collect()
+}