Given an integer array nums, find the contiguous subarray (containing at least one number) which has the largest sum and return its sum.
Example:
Input: [-2,1,-3,4,-1,2,1,-5,4],
Output: 6
Explanation: [4,-1,2,1] has the largest sum = 6.
Follow up:If you have figured out the O(n) solution, try coding another solution using the divide and conquer approach, which is more subtle.
难度：easy
题目：给定一整数组数，找出最大子数组计算其和并返回。
思路：包含当前元素的最大值。MaxValueWithCurrentElement = Math.max(MaxValueWithCurrentElement + nums[i], nums[i]). 然后再计算最大值。MaxValue = Math.max(MaxValue, MaxValueWithCurrentElement)
class Solution {
public int maxSubArray(int[] nums) {
int maxValWithCurElem = nums[0];
int maxVal = nums[0];
for (int i = 1; i < nums.length; i++) {
maxValWithCurElem = Math.max(maxValWithCurElem + nums[i], nums[i]);
maxVal = Math.max(maxValWithCurElem, maxVal);
}
return maxVal;
}
}