题解 | #表示数字#
表示数字
http://www.nowcoder.com/practice/637062df51674de8ba464e792d1a0ac6
简单模拟，注意头尾
s=input()
cur, last, n = 0, 0, len(s)
res = []
while cur < n:
while cur < n and s[cur].isdigit(): cur += 1
if cur != last:
res.append(s[last:cur])
last = cur
while cur < n and not s[cur].isdigit(): cur += 1
if cur != last:
res.append(s[last:cur])
last = cur
res = "*".join(res)
if res[-1].isdigit(): res += '*'
if res[0].isdigit(): res = '*'+res
print(res)
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