Problem DescriptionA sequence consisting of one digit, the number 1 is initially written into a computer. At each successive time step, the computer s...
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其他好文 时间：
2015-05-18 18:25:26
阅读次数：
99
字符串类型验证ctype_alnum— 做字母和数字字符检测ctype_alpha— 做纯字符检测ctype_cntrl— 做控制字符检测ctype_digit— 做纯数字检测ctype_graph— 做可打印字符串检测，空格除外ctype_lower— 做小写字符检测ctype_print— 做可...
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Web程序 时间：
2015-05-18 18:09:44
阅读次数：
135
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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编程语言 时间：
2015-05-16 11:47:02
阅读次数：
107
1631 LockerA password locker with N digits, each digit can be rotated to 0-9 circularly.You can rotate 1-3 consecutive digits up or down in one step.F...
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其他好文 时间：
2015-05-16 10:19:13
阅读次数：
725
Let’s consider K-based numbers, containing exactly N digits. We define a number to be valid if its K-based notation doesn’t contain two successive zeros. For example:1010230 is a valid 7-digit number;...
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其他好文 时间：
2015-05-14 22:10:44
阅读次数：
191
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 the head of the list.
对一个数字进行加1运算，这里需要注意进位的情况。按以...
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其他好文 时间：
2015-05-14 20:34:53
阅读次数：
126
Problem DescriptionThe digital root of a positive integer is found by summing the digits of the integer. If the resulting value is a single digit then...
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其他好文 时间：
2015-05-14 00:37:26
阅读次数：
108
Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon...
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其他好文 时间：
2015-05-13 06:17:42
阅读次数：
157
题目A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99.Find the larges...
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其他好文 时间：
2015-05-13 00:51:35
阅读次数：
228
其它进制转换成10进制 ((num=base#digit)) echo $numbase8->base10 ((num=8#123)) echo $num 83base16->base10 ((num=16#ff)) echo $num 25510进制转换成其它进制 echo "obase=base...
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系统相关 时间：
2015-05-12 13:23:36
阅读次数：
159
