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
n = input()
# 统计每个出现的字母的个数，使用字典存储
a = {}
for i in n:
if i in a:
a[i] += 1
else:
a[i] = 1
# 对字典中的值进行排序，找出出现最少的次数值
a_sort = sorted(a.values())
min_num = a_sort[0]
# 遍历字典，将出现次数等于最少出现值的字母放进列表中
c = []
for i in a:
if a[i] == min_num:
c.append(i)
# 遍历列表，将字符串中出现最少次数的字母替换为''
for i in c:
n = n.replace(i, '')
print(n)
