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.
tips:
子数组一定是原数组中的一个连续的序列。所以当一个元素不选择时,那么在它之前的元素都将被抛弃
具体代码如下:
class Solution {
public int maxSubArray(int[] nums) {
if(nums.length <= 0) {
return 1;
}
int max = nums[0];
int temp = max;
for(int i = 1;i<nums.length;i++) {
temp = Math.max(nums[i],temp + nums[i]);
max = Math.max(max,temp);
}
return max;
}
}