Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters fo...
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其他好文 时间:
2014-06-27 12:48:10
阅读次数:
238
Determine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where empty cells are filled with ...
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其他好文 时间:
2014-06-26 19:35:09
阅读次数:
266
使用“VS2013 开发人员命令提示”运行签名工具。转到要签名的文件目录运行命令:```csharpsigntool sign /a 要签名的程序.exe```signtool 的相关命令```csharpUsage: signtool [options] Valid command...
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其他好文 时间:
2014-06-26 18:31:16
阅读次数:
1092
Working with Characters (与字符相关) 在Swift中,String类型表示一组有序字符的值.每个字符都是一个Unicode符号.可以使用for-in循环来遍历字符串中的每个字符: for character in "Dog!🐶" { println(...
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移动开发 时间:
2014-06-26 15:56:01
阅读次数:
235
Given a string s consists of upper/lower-case alphabets and empty space characters
' ',
return the length of last word in the string.
If the last word does not exist, return 0.
Note...
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其他好文 时间:
2014-06-26 13:55:01
阅读次数:
179
Strings and Characters (字符串和字符) 字符串是一组字符组成的序列,例如“hello, world" 或 "albatross”.在Swift中,字符串使用String类型进行声明,它代表一组由Character(字符)类型组成的值的序列. String类型和Charac.....
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移动开发 时间:
2014-06-25 13:42:58
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186
Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ...
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其他好文 时间:
2014-06-25 12:44:56
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188
Given a string containing just the characters '(' and ')', find the length of the longest valid (well-formed) parentheses substring.For "(()", the lon...
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其他好文 时间:
2014-06-25 11:07:45
阅读次数:
230
Given a string s consists of upper/lower-case alphabets and empty space characters '
', return the length of last word in the string.
If the last word does not exist, return 0.
Note: A word is...
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其他好文 时间:
2014-06-25 10:30:08
阅读次数:
220
【题目】
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" is not a palindrome.
Note:
Have you consider that the string m...
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其他好文 时间:
2014-06-24 15:35:07
阅读次数:
150