题目：Given a non-negative integernum, repeatedly add all its digits until the result has only one digit.For example:Givennum = 38, the process is like:3...
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其他好文 时间：
2015-12-03 07:11:38
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145
基本正则表达式：REGularEXPression（REGEXP）一、元字符：.：匹配任意单个字符；[]：匹配指定范围内的任意单个字符；[^]：匹配指定范围外的任意单个字符。PS：常用字符集合[:digit:]——数字集合[:lower:]——小写字母集合[:upper:]——大写字母集合[:space:]——空格[:alpha:..
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其他好文 时间：
2015-12-02 18:52:01
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126
题目：Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.For example:Given n = 13,Retur...
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其他好文 时间：
2015-11-28 12:01:13
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129
Given a non-negative integernum, repeatedly add all its digits until the result has only one digit.For example:Givennum = 38, the process is like:3 + ...
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其他好文 时间：
2015-11-28 11:50:50
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125
Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is at...
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其他好文 时间：
2015-11-27 23:35:14
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174
问题：Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telep...
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其他好文 时间：
2015-11-27 14:57:24
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158
Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most significant digit is at...
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其他好文 时间：
2015-11-26 14:43:22
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120
Reverse digits of an integer.Example1: x = 123, return 321Example2: x = -123, return -321Discuss: 1.If the integer's last digit is 0, what should the ...
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其他好文 时间：
2015-11-24 22:01:04
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112
题目描述:(链接)Given a non-negative integernum, repeatedly add all its digits until the result has only one digit.For example:Givennum = 38, the process is ...
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其他好文 时间：
2015-11-20 12:19:27
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154
Add Two NumbersYou have two numbers represented by a linked list, where each node contains a single digit. The digits are stored inreverseorder, such ...
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其他好文 时间：
2015-11-17 12:52:20
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180
