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# 53. Maximum Subarray
## 1.問題
* 給予一個整數的array, 找出總和為最大值的連續subarray
## 2.想法
* 提問
* 確認題意: 取得最大總和的subarray
* parameter
* number list
* test input
* 說明想法
* 由左邊開始移動, 計算subarray的總和
* 記錄歷史的最大總和
* 一旦總和小於0, 則讓總和歸零
* 測試計算複雜度
## **3.程式碼**
```
class Solution {
public:
int maxSubArray(vector& nums) {
int ans = nums[0], i, j, sum=0;
for(i = 0;i< (int)nums.size(); i++){
sum += nums[i];
ans = max(sum,ans);
sum = max(sum,0);
}
return ans;
}
};
```
---
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