tidy

find_pivot_index/src/main.rs

@@ -3,7 +3,6 @@ fn main() {
 }
 
 fn f(nums: Vec<i32>) -> i32 {
-    let mut pivot = -1;
     let mut rights = Vec::with_capacity(nums.len());
     let mut cur = 0;
     for n in nums.iter().rev() {
@@ -16,9 +15,8 @@ fn f(nums: Vec<i32>) -> i32 {
     for (i, num) in nums.into_iter().enumerate() {
         cur += num;
         if cur == rights[i] {
-            pivot = i as i32;
-            break;
+            return i as i32;
         }
     }
-    pivot
+    -1
 }