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#include <iostream>
#include <vector>
#include <climits>
using namespace std;
/*
TC: O(n)
SC: O(1)
ํ’€์ด ๋ฐฉ๋ฒ•:
- sum์— ํ˜„์žฌ ๊ฐ’์„ ๋”ํ•ด๊ฐ€๋ฉด์„œ ์ตœ๋Œ€๊ฐ’์„ ๊ฐฑ์‹ ํ•œ๋‹ค
- ๋ˆ„์ ํ•ฉ์ด ์Œ์ˆ˜๊ฐ€ ๋์„ ๋•Œ 0์œผ๋กœ ๋ฆฌ์…‹ํ•œ๋‹ค
๊ณ ๋ฏผํ–ˆ๋˜ ์ผ€์ด์Šค(left์™€ right ํฌ์ธํ„ฐ๋ฅผ ๋‘๊ณ  ํ’€์—ˆ์„ ๋•Œ):
[-2, -1]
[-1, -2]
[-2, 1]
[-1, 1, 2, 1]
*/
class Solution {
public:
int maxSubArray(vector<int>& nums) {
int max = nums[0];
int sum = 0;
for (int i = 0; i < nums.size(); i++)
{
sum += nums[i];
if (sum > max)
max = sum;
if (sum < 0)
sum = 0;
}
return (max);
}
};
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