The following function computes the maximum value contained in an integer array p[] of size n (n >= 1).
    int max (int *p, int n){
   int a = 0, b = n –1;
   while (__________){
   if (p[a]<= p[b]){a = a + 1;}
   else {b = b – 1;}
   }
   return p[a];
   }
The missing loop condition is