some more problems

search-suggestions-system/sol.rs

@@ -0,0 +1,31 @@
+impl Solution {
+    pub fn suggested_products(products: Vec<String>, search_word: String) -> Vec<Vec<String>> {
+        // Products list mapped to maximum common prefix length with search_word
+        let max_prefix_matches = products.iter()
+            .map(|product| product.bytes()
+                .zip(search_word.bytes())
+                .take_while(|&(chr1, chr2)| chr1 == chr2)
+                .count()
+            )
+            .collect::<Vec<_>>();
+        search_word.bytes()
+            .enumerate()
+            .map(|(chr_idx, chr)| {
+                // Get all options that match at least chr_idx prefix length
+                let mut options = max_prefix_matches.iter()
+                    .enumerate()
+                    .filter_map(|(product_idx, &max_prefix_match)| {
+                        if max_prefix_match > chr_idx {
+                            Some(&products[product_idx])
+                        } else { None }
+                    })
+                    .collect::<Vec<_>>();
+                options.sort(); // TODO : Could optimise since we are only taking 3 smallest elements
+                options.into_iter()
+                    .take(3)
+                    .map(|s| s.clone())
+                    .collect()
+            })
+            .collect()
+    }
+}