Update 724_Find_Pivot_Index.java

Author: seanprashad

Arrays/724_Find_Pivot_Index.java

@@ -1,21 +1,18 @@
 class Solution {
     public int pivotIndex(int[] nums) {
-        if (nums == null || nums.length == 0) {
-            return -1;
-        }
-
         int currSum = 0, totalSum = 0;
 
         for (int n : nums) {
             totalSum += n;
         }
 
         for (int i = 0; i < nums.length; i++) {
-            if (currSum + nums[i] == totalSum) {
+            currSum += nums[i];
+
+            if (totalSum == currSum) {
                 return i;
             }
 
-            currSum += nums[i];
             totalSum -= nums[i];
         }