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.
一、问题描述:输入一个整数数组,求数组中连续的子数组使其和最大。
二、解题方法:
//从左至右扫描数组,如果前面一段连续子数组的和小于0,则置为0,重新从下个元素开始累加
int maxSubArray(vector<int>& nums)
{
int ans=nums[0];//注意:ans应该初始化为数组第一个元素
int curSum=0;
int n=nums.size();
for(int i=0;i<n;i++)
{
curSum+=nums[i];
if(curSum>ans)
ans=curSum;
if(curSum<0)
curSum=0;
}
return ans;
}
原文:http://blog.csdn.net/geekmanong/article/details/50857679