Merge pull request neetcode-gh#2231 from itopstack/main

Create 0724-find-pivot-index.swift

Author: tahsintunan

swift/0724-find-pivot-index.swift

@@ -0,0 +1,21 @@
+// Time: O(n)
+// Space: O(n)
+
+class Solution {
+    func pivotIndex(_ nums: [Int]) -> Int {
+        var nums = nums
+        for i in 1..<nums.count {
+            nums[i] += nums[i - 1]
+        }
+
+        for i in 0..<nums.count {
+            let left = i == 0 ? 0 : nums[i - 1]
+            let right = i == nums.count - 1 ? 0 : nums[nums.count - 1] - nums[i]
+            if left == right {
+                return i
+            }
+        }
+
+        return -1
+    }
+}