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
https://www.nowcoder.com/practice/05182d328eb848dda7fdd5e029a56da9
'''
构造字典，字典的键值对为字母及其次数
然后找出出现次数最小的字符
遍历所有的字符，不添加出现次数最小的字符
'''
while True:
try:
a = input()
a_dict = {}
for k in set(a): # 构建字典
a_dict[k] = 0
for i in list(a): # 构建字典
a_dict[i] += 1
min_value = min(a_dict.values())
min_str = []
for k,v in a_dict.items(): # 找出最小出现次数字符
if v == min_value:
min_str.append(k)
new_chr = ''
for i in list(a): # 删除最小出现次数字符
if i not in min_str:
new_chr += i
print(new_chr)
except:
break
