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 = list(input())
lst = []
for i in n:
lst.append(n.count(i))
pos = [q for q in range(len(lst)) if lst[q] == min(lst)]# 学习这个方法
ct = 0
for o in sorted(pos):
del n[o-ct]
ct+=1
print(''.join(n))
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