删除字符串中出现次数最少的字符
http://www.nowcoder.com/questionTerminal/05182d328eb848dda7fdd5e029a56da9
while True:
try:
s, a = input(), {}
for i in s:
a[i] = s.count(i)
b = sorted(a.values())
for key, value in a.items():
if b[0] == value:
s = s.replace(key, "")
print(s)
except:
break