Index of / releases/2025-02-21 12:06- ubuntu/2024-11-20 18:07-
int index = fileName.lastIndexOf('.'); if (index > 0) { String extension = fileName.substring(index + 1); System.out.println('Extension: ' + extension); } 输出结果为: Extension: txt 这段代码首先使用lastIndexOf方法查找文件名中最后一个'.'字符的位置,然后使用substring方法从该位置开始截取...
Index of / ubuntu/2025-03-10 14:08-
The occurences file holds the connection between words and documents (word1 appears in doc1 and doc2, not in doc3). It is represented in a form of a matrix. In the above image is shown the process of creating the two files mentioned. If you are further interester in this pr...
Console.WriteLine(FilePath);inta= FilePath.IndexOf("f"); Console.WriteLine(a);intb = FilePath.IndexOf("s",3); Console.WriteLine(b);intc = FilePath.LastIndexOf("x"); Console.WriteLine(c);intd = FilePath.LastIndexOf("s",15); ...
The field has a fixed value of AUTO. This field is mandatory. DEVICENUM Number of devices to be upgraded using this index file. The value is an integer that ranges from 1 to 100. To upgrade the software version of one device, set the value of the DEVICENUM field to 1 and use the...
The field has a fixed value of AUTO. This field is mandatory. DEVICENUM Number of devices to be upgraded using this index file. The value is an integer that ranges from 1 to 100. To upgrade the software version of one device, set the value of the DEVICENUM field to 1 and use th...
在Python中，如果在访问列表中不存在的索引时会抛出"list index out of range"错误。这通常是因为你尝试访问的索引超出了列表的范围。例如，如果你有一个长度为3的列表：my_list = [1, 2, 3]那么访问索引0、1、2是合法的，但是访问索引3就是不合法的，因为它超出了列表的范围。这时，如果你尝试...
1.indexOf(String str) 说明:从前往后查找指定的字符串,返回在自定义字符串中第一次出现的位置(返回索引值,从0开始) 如果自定义字符串中不包含指定的字符串,则返回-1 System.out.println(fileName.indexOf("e"));//3 System.out.println(fileName.indexOf("1")); //-1 ...
This is an index of all pages in this Wiki. See also: WordIndex -- a permuted index of all words occuring in titles SiteNavigation -- other indexing schemes 1 | 2 | 3 | 9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | ...