题解 | 删除字符串中出现次数最少的字符

s=input()
dic={}
re=[]
for i in s:
    if i not in dic:
        dic[i]=1
    else:
        dic[i]+=1
min_num=min(dic.values())
for j in s:
    if dic[j]!=min_num:
        re.append(j)
print(''.join(re))