# I have look up online and derived a divide and conquer method from others' solution but still time out.

• ``````public class Solution {
public int maxSubArray(int[] nums) {
if(nums.length == 0 || nums == null) {
return 0;
}

int ans = findMax(nums, 0, nums.length - 1);

return ans;
}

public int findMax(int[] nums, int left, int right) {
if(left < right) {
int mid = left + (right - left) / 2;
int leftMax = findMax(nums, left, mid);
int rightMax = findMax(nums, mid + 1, right);
int leftHalf = Integer.MIN_VALUE, rightHalf = Integer.MIN_VALUE;

int leftSum = 0;
for(int i = mid; i > 0; i--) {
leftSum = leftSum + nums[i];
leftHalf = leftHalf >= leftSum ? leftHalf : leftSum;
}

int rightSum = 0;
for(int i = mid + 1; i < nums.length; i++) {
rightSum += nums[i];
rightHalf = rightHalf >= rightSum ? rightHalf : rightHalf;
}

int tmpRes = Math.max(leftMax, rightMax);
int res = Math.max(tmpRes, leftHalf + rightHalf);

return res;
} else {
return nums[left];
}
}
}``````

• Please try submitting again, the divide and conquer solution for Java should be accepted now.

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