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Maximum Subarray

时间:2014-06-19 12:08:20      阅读:270      评论:0      收藏:0      [点我收藏+]

标签:java   leetcode   array   

题目

Find the contiguous subarray within an array (containing at least one number) which has the largest sum.

For example, given the array [?2,1,?3,4,?1,2,1,?5,4],
the contiguous subarray [4,?1,2,1] has the largest sum = 6.

More practice:

If you have figured out the O(n) solution, try coding another solution using the divide and conquer approach, which is more subtle.

方法

寻找和最大的子数组,时间O(n)。
    public int maxSubArray(int[] A) {
        if (A == null) {
            return 0;
        }
        int len = A.length;
        int max = A[0];
        int cur = 0;
        for (int i = 0; i < len; i++) {
            cur += A[i];
            if (max < cur) {
                max = cur;
            }
            if (cur < 0) {
                cur = 0;
            }
        }
        return max;
    }


Maximum Subarray,布布扣,bubuko.com

Maximum Subarray

标签:java   leetcode   array   

原文地址:http://blog.csdn.net/u010378705/article/details/30069839

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