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[LeetCode]Maximum Subarray

时间:2014-10-08 16:30:55      阅读:239      评论:0      收藏:0      [点我收藏+]

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.

click to show more practice.

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.

o(n)解法

public class Solution {
    public int maxSubArray(int[] A) {
        if(A.length == 1) return A[0];
        int max = A[0];
        int sum = A[0];
        for(int i = 1;i<A.length;i++){
        	sum = Math.max(sum+A[i],A[i]);
        	max = Math.max(sum,max);
        }
        return max;
    }
}







[LeetCode]Maximum Subarray

原文:http://blog.csdn.net/guorudi/article/details/39894167

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