C 语言如何判断等差数列？ 第1页

       #include <stdio.h> #define LEN 1000 int a[LEN]; int main(){     int n, i;     scanf("%d", &n);     for(i = 0; i < n; i++)         scanf("%d", &a[i]);          //find min & max and compute delta     int min = a[0], max = a[0];     for(i = 1; i < n; i++){         if(min > a[i])             min = a[i];         if(max < a[i])             max = a[i];     }     int delta = (max - min) / (n - 1);          //try to sort the sequence     int q;     for(q = 0; q < n; q++)         while(a[q] != min + q * delta){             int pos, tmp;             pos = (a[q] - min) / delta;             if((a[q] - min) % delta != 0 || a[pos] == a[q])                 break;             tmp = a[pos];             a[pos] = a[q];             a[q] = tmp;         }      printf("%s
", q == n? "True": "False");      return 0; }