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能测试成功的作业

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尼克斯劳迪

#1 Created at ... [Delete] [Delete and Lock User] 
    if s=='':
        return s
    n=0
    m=-1    
    while s[n]==" ":
        n=n+1
        if n==len(s)-1:
            return ''
    while s[m]==" ":
        m=m-1
    m=m+len(s)+1
    return s[n:m]

尼克斯劳迪

#2 Created at ... [Delete] [Delete and Lock User]

是一种不太机智的方法啦

龍先生2号

#3 Created at ... [Delete] [Delete and Lock User]

   while s!='' and s[0]==' ':

        s=s[1:]

    while s!='' and s[-1]==' ':

        s=s[:-1]

    return s

#这个最好，绝了，你的代码又臭又长

区块链小浪

#4 Created at ... [Delete] [Delete and Lock User]

 while s!='' and s[0]==' ':

        s=s[1:]

    while s!='' and s[-1]==' ':

        s=s[:-1]

    return s

这个确实厉害

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