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53.最大子序和.java
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/*
* @lc app=leetcode.cn id=53 lang=java
*
* [53] 最大子序和
*
* https://leetcode-cn.com/problems/maximum-subarray/description/
*
* algorithms
* Easy (43.41%)
* Total Accepted: 43.3K
* Total Submissions: 99.6K
* Testcase Example: '[-2,1,-3,4,-1,2,1,-5,4]'
*
* 给定一个整数数组 nums ,找到一个具有最大和的连续子数组(子数组最少包含一个元素),返回其最大和。
*
* 示例:
*
* 输入: [-2,1,-3,4,-1,2,1,-5,4],
* 输出: 6
* 解释: 连续子数组 [4,-1,2,1] 的和最大,为 6。
*
*
* 进阶:
*
* 如果你已经实现复杂度为 O(n) 的解法,尝试使用更为精妙的分治法求解。
*
*/
class Solution {
public int maxSubArray(int[] nums) {
int current = nums[0];
int sum = nums[0];
for (int i = 1; i < nums.length; i++) {
if(current > 0){
current += nums[i];
}else{
current = nums[i];
}
if(sum < current) sum = current;
}
return sum;
}
}