There are several ways to delete elements from a list. If you know the index of the element you want, you can use pop: pop modifies the list...
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其他好文 时间:
2014-07-16 19:26:12
阅读次数:
189
在你解析一个Document之后可能想修改其中的某些属性值,然后再保存到磁盘或都输出到前台页面。可以使用属性设置方法Element.attr(String key, String value), 和Elements.attr(String key, String value).假如你需要修改一个元素...
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Web程序 时间:
2014-07-16 17:47:50
阅读次数:
307
原SQL如下:SQL的主要问题是红色部分居然通过标量查询,反复的查找与SQL相同的基表,很显然这个可以用case when来简化。select a.TRAN_ID,a.AMOUNT,a.BALANCE,a.INVAMT,a.PROMISED,a.INVNO,a.RCLNUM,b.PROBLEM_ID...
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数据库 时间:
2014-07-16 17:12:14
阅读次数:
332
Partition an array of integers around a value such taht all elements less than x come before elements greater than or equal to x.Idea: Just use of sub...
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其他好文 时间:
2014-07-15 22:52:15
阅读次数:
239
Matrix
Time Limit: 3000MS
Memory Limit: 65536K
Total Submissions: 17766
Accepted: 6674
Description
Given an N*N matrix A, whose elements are either 0 or 1. A[i, j] ...
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其他好文 时间:
2014-07-15 12:24:44
阅读次数:
319
Given an array arr[] of n integers, construct a Product Array prod[] (of same size) such that prod[i] is equal to the product of all the elements of a...
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其他好文 时间:
2014-07-15 10:03:20
阅读次数:
216
gcc -shared -o hack.so hack.c/usr/bin/ld: /tmp/ccUZREwA.o: relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object...
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其他好文 时间:
2014-07-14 19:26:29
阅读次数:
1539
The most common way to traverse the elements of a list is with a for loop. The syntax is the same as for strings: This works well if you onl...
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其他好文 时间:
2014-07-13 19:38:51
阅读次数:
324
Given an integer n, generate a square matrix filled with elements from 1 to n2 in
spiral order.
For example,
Given n = 3,
You should return the following matrix:
[
[ 1, 2, 3 ],
[ 8, 9, 4 ],
[...
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其他好文 时间:
2014-07-13 16:37:16
阅读次数:
199