摘要:
Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is like: 阅读全文
posted @ 2017-09-06 07:24
白常福
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摘要:
Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -. Example:Given a = 1 and b = 2, return 3. 分析:不通过四则运算符号完 阅读全文
posted @ 2017-09-06 07:02
白常福
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