public class Solution {
public int maxSubArray(int[] nums) {
if (nums == null || nums.length == 0) {
return 0;
}
int max = Integer.MIN_VALUE, sum = 0, minSum = 0;
for (int i = 0; i < nums.length; i++) {
sum += nums[i];
max = Math.max(max, sum - minSum);
minSum = Math.min(minSum, sum);
}
return max;
}
}
易错点
熟悉Best time to buy and sell stock ,然后和维护的这三个值对应上:max, sum 和 minSum