Fix clippy errors

day_02/src/main.rs

@@ -65,11 +65,11 @@ fn compare_levels(curr_level: i64, next_level: i64) -> LevelTransition {
         TransitionDirection::Desc
     };
 
-    return LevelTransition { state, direction };
+    LevelTransition { state, direction }
 }
 
 /// Tests if a report is safe
-fn is_report_safe_no_dampening(report: &Vec<i64>) -> bool {
+fn is_report_safe_no_dampening(report: &[i64]) -> bool {
     // Turn the report into a bunch of states for each adjacent pair in the report
     let report: Vec<LevelTransition> = report
         .windows(2)
@@ -98,13 +98,14 @@ fn is_report_safe_no_dampening(report: &Vec<i64>) -> bool {
         // Setup for next iteration
         prev_transition = level_transition;
     }
-    return true;
+
+    true
 }
 
 /// Tests if a report is safe or code be made safe if you remove a single
 /// level from the report
-fn is_report_safe_with_dampening_brute_force(report: &Vec<i64>) -> bool {
-    if is_report_safe_no_dampening(&report) {
+fn is_report_safe_with_dampening_brute_force(report: &[i64]) -> bool {
+    if is_report_safe_no_dampening(report) {
         return true;
     }
 
@@ -115,7 +116,8 @@ fn is_report_safe_with_dampening_brute_force(report: &Vec<i64>) -> bool {
             return true;
         }
     }
-    return false;
+
+    false
 }
 
 // fn compare_levels_3(prev_level: i64, curr_level: i64, next_level: i64) -> LevelTransition {