CCF201712-1-最小差值

 1 n = int(input())
 2 b = input().split()
 3 a = [0]*n
 4 for i in range(n):
 5     a[i] = int(b[i])
 6 c = []
 7 for i in range(n):
 8     tmp = 10001
 9     for j in range(n):
10         if j == i:
11             continue
12         else:
13             minn = abs(a[i] - a[j])
14             if tmp >= minn:
15                 tmp = minn
16         c.append(tmp)
17 
18 print(min(c))