1 #include <stdio.h>
 2 #include <stdlib.h>
 3 
 4 int a[6] = {2,-1,-4,5,-3,7};
 5 int b[6] = {-2,-1,-4,-5,-3,-7};
 6 
 7 int get_max_sum(int x[],int s)
 8 {
 9     if(s<=0)
10             exit(-1);
11 
12     int max = x[0];
13     int sum = 0;
14 
15     int i=0;
16     for(i=0;i < s;i++)
17     {
18         if(sum<0)
19             sum = x[i];
20         else
21             sum = sum+x[i];
22         if(sum>max)
23             max=sum;        
24     }
25     return max;
26 }
27 
28 int main()
29 {
30     printf("the max sum a is  %d\n",get_max_sum(a,6));
31     printf("the max sum b is  %d\n",get_max_sum(b,6));
32     return 0;
33 }

 1 #!/usr/bin/python
 2 #^_^*--coding:utf8
 3 
 4 def get_max_sum(a):
 5     imax = a[0]
 6     isum = 0
 7 
 8     for i in a:
 9         if isum < 0:
10             isum = i
11         else:
12             isum = isum+i
13 
14         if isum > imax:
15             imax = isum
16     
17     return isum
18 
19 t = [2,-1,4,-3,5,0]
20 
21 print get_max_sum(t)