Made one fuction working, rustfmt

hw6/task1/src/main.rs

 }
 
 /// Splits the given String reference and returns it as Vector.
-/*fn split_into_strings<'2>(s1:&'a str) -> Vec<&'a str> {
-    s1.to_string().split_whitespace().collect()
-}*/
+fn split_into_strings<'a>(s1: &'a str) -> Vec<String> {
+    s1.to_string()
+        .split_whitespace()
+        .map(|s| s.to_string())
+        .collect()
+}
+
 /// Calculates the sum of the given Strings and returns them as a Result.
 fn sum_strings(v: Vec<&str>) -> Result<i32, &str> {
     let mut sum = 0;
         match x.parse::<i32>() {
             Ok(val) => {
                 match i32::checked_add(sum, val) {
-                    Some(y) => {sum = y;}
+                    Some(y) => {
+                        sum = y;
+                    }
                     None => return Err("Overflow"),
                 }
             }
         match x.parse::<i32>() {
             Ok(val) => {
                 match i32::checked_mul(prod, val) {
-                    Some(y) => {prod = y;}
+                    Some(y) => {
+                        prod = y;
+                    }
                     None => return Err("Overflow"),
                 }
             }