题解 | 删除字符串中出现次数最少的字符
import sys
str_input = input()
set_input = set(str_input)
list_count = []
for ch in set_input:
count = str_input.count(ch)
list_count.append(count)
min_count = min(list_count)
for ch in set_input:
count = str_input.count(ch)
if count == min_count:
str_input = str_input.replace(ch,"")
print(str_input)
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