本來很簡單的一道題,都是自己考慮不周全所至啊!我剛開始每一次輸入都進行一次排序,然後求出其平均值,從頭至尾把大於平均值的數與平均值的差值相加,但是也有可能從數組的另一頭反着算會是較小的。於是……
#include<cstdio>
#include<cstdlib>
double a[1005];
char tmp[1005];//用於截取小數點後前兩位時用
int main(void)
{
int n = 0;
while(scanf("%d",&n) == 1)
{
if(n == 0) break;//如果輸入爲0,結束
double trans1 = 0.0,trans2= 0.0;
double addall = 0.0;
for(int i = 0;i < n;i ++)
{
scanf("%lf",&a[i]);
addall += a[i];
}
double average = addall/n;
sprintf(tmp,"%.2lf",average);
sscanf(tmp,"%lf",&average);
for(int i = 0;i < n; i++)
{
if(a[i] > average) trans1 += (a[i]-average);
else trans2 += (average -a[i]);
}
trans1 > trans2? printf("$%.2lf/n",trans2):printf("$%.2lf/n",trans1);
}
return 0;
}