题解 | #字符串排序#
字符串排序
https://www.nowcoder.com/practice/5190a1db6f4f4ddb92fd9c365c944584
s = input()
a = ''
for i in s:
if i.isalpha():
a += i
aa = sorted(a,key=str.upper)
res = []
idx = 0
for i in range(len(s)):
if not s[i].isalpha():
res.append(s[i])
else:
res.append(aa[idx])
idx += 1
print(''.join(res))