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  • python split space

    发现自己写python的空格split还挺多坎的,尤其是最后一个是空格的情形:

    def split(s):
        i = 0
        ans = []
        while i < len(s):
            start = i
            # find space
            while i < len(s) and s[i] != ' ':
                i += 1
            ans.append(s[start:i])
            i += 1
        if s and s[-1] == " ":
            ans.append("")
        return ans
    
    assert split("") == []
    assert split(" ") == ["", ""]
    assert split("  ") == ["", "", ""]
    assert split("a") == ["a"]
    assert split("a b") == ["a", "b"]
    assert split(" a") == ["", "a"]
    assert split("a ") == ["a", ""]
    assert split(" a b") == ["", "a", "b"]
    assert split("a b ") == ["a", "b", ""]
    assert split("ac bcd") == ["ac", "bcd"]
    

      

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  • 原文地址:https://www.cnblogs.com/bonelee/p/8757711.html
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