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本题优化才能更节约时间??(付代码)该程序的内存使用是408K,运行时间是93ms,请教如何才能使时间更少? #include<stdio.h> #include<malloc.h> int isAm(int *a,int n) { int i; int flag =1; for(i=0; i<n;i++) { if(a[a[i]-1] != (i+1)) return 0; } return flag; } int main() { int n,i; int *a; while( scanf("%d",&n) != EOF) { if(n == 0) break; a = (int*)calloc(n,sizeof(int)); for(i=0;i<n;i++) scanf("%d",&a[i]); if(isAm(a,n)) printf("ambiguous\n"); else printf("not ambiguous\n"); free(a); } } Followed by:
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