题解 | #删除字符串中出现次数最少的字符#
删除字符串中出现次数最少的字符
http://www.nowcoder.com/practice/05182d328eb848dda7fdd5e029a56da9
if __name__ == '__main__':
n = input()
m = set(n)
d = {}
for letter in m:
d[letter] = n.count(letter)
for key,value in d.items():
if value == min(d.values()):
n=n.replace(key,'')
print(n)
