From c36e503041f4046ecd5adffae460aecf6026b79f Mon Sep 17 00:00:00 2001
From: wxchen <chenwenxuanhehe@163.com>
Date: Tue, 9 Jul 2024 00:00:51 +0800
Subject: [PATCH] 724

---
 724.cpp  | 20 ++++++++++++++++++++
 main.cpp |  7 -------
 2 files changed, 20 insertions(+), 7 deletions(-)
 create mode 100644 724.cpp

diff --git a/724.cpp b/724.cpp
new file mode 100644
index 0000000..62f2705
--- /dev/null
+++ b/724.cpp
@@ -0,0 +1,20 @@
+class Solution {
+public:
+    int pivotIndex(vector<int>& nums) {
+
+        if(nums.size() == 0) return -1;
+
+        vector<int> leftSum(nums.size(),0);
+
+        for(auto i = 0; i < nums.size(); i++){
+            leftSum[i] += nums[i];
+        }
+
+        for(auto i = 0; i < nums.size(); i++){
+            if(2 * leftSum[i] - nums[i] == leftSum[nums.size() - 1]){
+                return i;
+            }
+        }
+        return -1;
+    }
+};
\ No newline at end of file
diff --git a/main.cpp b/main.cpp
index e71f147..ac0300c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,10 +1,3 @@
-/*
- * @Description:
- * @Version: 1.0
- * @Autor: wxchen
- * @Date: 2022-11-21 15:27:10
- * @LastEditTime: 2024-07-03 23:15:58
- */
 #include <iostream>
 #include <vector>