Added solution for 2255

Author: chirag64

02255. Count Prefixes of a Given String.rs

@@ -0,0 +1,15 @@
+use std::cmp::min;
+
+impl Solution {
+    // Loop through the words and compare word with substring of same size. If they match, add one to the counter. In the end, return the counter value
+    pub fn count_prefixes(words: Vec<String>, s: String) -> i32 {
+        let mut counter = 0;
+        for word in words {
+            let smallest_length = min(word.len(), s.len());
+            if &s[0..smallest_length] == word {
+                counter += 1;
+            }
+        }
+        return counter;
+    }
+}