hdu 2020 绝对值排序

 1 #include <stdio.h>
 2 #include <math.h>
 3 int main ()
 4 {
 5     int n,a[100],i,j,t;
 6     while (scanf("%d",&n),n)
 7     {
 8         for (i=0; i<n; i++)
 9             scanf(" %d",&a[i]);
10         for (i=0; i<n; i++)
11         {
12             for (j=i; j<n; j++)
13             {
14                 if (fabs(a[j])>fabs(a[i]))
15                 {
16                     t=a[i];
17                     a[i]=a[j];
18                     a[j]=t;
19                 }
20             }
21             if (i>0) printf (" ");
22             printf ("%d",a[i]);
23         }
24         printf ("\n");
25     }
26     return 0;
27 }