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[LeetCode]Excel Sheet Column Title

题目描述:

Given a non-zero positive integer, return its corresponding column title as appear in an Excel sheet.

For example:

    1 -> A
    2 -> B
    3 -> C
    ...
    26 -> Z
    27 -> AA
    28 -> AB 

题目大意:

给定一个正整数,返回其在Excel表格中对应的列标题 ...

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[LeetCode]Fraction to Recurring Decimal

题目描述:

Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.

If the fractional part is repeating, enclose the repeating part in parentheses.

For example,

  • Given numerator = 1, denominator = 2, return "0.5" ...

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