练习
Topic sourcedef trim(s): n=0 m=-1 if s=='': return s else: while s[n]==' ': n=n+1 if n == len(s): return '' while s[m]==' ': m=m-1 if m==-1: s=s[n:] else: s=s[n:m+1] return s
瞎鸡儿改的,不过可以通过
- 1
def trim(s): n=0 m=-1 if s=='': return s else: while s[n]==' ': n=n+1 if n == len(s): return '' while s[m]==' ': m=m-1 if m==-1: s=s[n:] else: s=s[n:m+1] return s
瞎鸡儿改的,不过可以通过
易燃丶易爆炸的春天20609
def trim(s): n=0 m=-1 if s==[]: return s else: while s[n]==' ': n=n+1 s=s[n:] while s[m]==' ': m=m-1 s=s[:m+1] return s 不能识别全是空格的字符串,希望有大神可以一起想想