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leetcode-Product of Array Except Self-238
输入一个数组a[i],求b[i]=a[0]*a[1]*...a[i-1]*a[i+1]....a[n-1] 也就是除了它自己其余元素的乘积组成的数组,要求时间ON,空间O1,并且不能用除法 1.如果能用除法,可以先遍历一遍计算出总的乘积(不考虑溢出),然后在遍历一遍依次用乘积除以当前元素即可 2.不 ...
分类:其他好文   时间:2016-09-03 22:26:04    阅读次数:166
Django抛错不存在(DoesNotExist)
except modelname.DoesNotExist: ...
分类:其他好文   时间:2016-09-02 20:23:25    阅读次数:154
<python>复习各种符号和关键字
Keywords(关键字) ? and ? del ? from ? not ? while ? as ? elif ? global ? or ? with ? assert ? else ? if ? pass ? yield ? break ? except ? import ? print ...
分类:编程语言   时间:2016-09-02 11:21:38    阅读次数:153
Money out of Thin Air
Money out of Thin Air Time limit: 1.0 secondMemory limit: 64 MB Each employee of the company Oceanic Airlines, except for the director, has exactly on ...
分类:其他好文   时间:2016-09-01 12:37:22    阅读次数:234
Python 获取一个对象的名字
Note: 这里的对象是广义的,一个列表也算 有name的不在讨论之列, 因为可以直接输出 没有name的,可以参考如下代码,使用到的是globals() except_word是用于过滤掉那些不想要的结果的,比如下面的例子中的for循环的each_item 这种 for循环干扰的情况有的时候会出现 ...
分类:编程语言   时间:2016-09-01 02:05:03    阅读次数:363
ZZNU 1163: 在线判题(指针专题)
题目描述 Ignatius is building an Online Judge, now he has worked out all the problems except the Judge System. The system has to read data from correct ou ...
分类:其他好文   时间:2016-08-31 20:43:47    阅读次数:375
be careful with "bash -ex"
http://tldp.org/LDP/abs/html/options.html -e errexit Abort script at first error, when a command exits with non-zero status (except in until or while ...
分类:其他好文   时间:2016-08-31 08:16:56    阅读次数:165
【LeetCode】136. Single Number 解题小结
题目: Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime com ...
分类:其他好文   时间:2016-08-31 07:08:42    阅读次数:134
How to find First Non-Repeated Character from String
You need to write a function, which will accept a String and return first non-repeated character, for example in the world "hello", except 'l' all are ...
分类:其他好文   时间:2016-08-22 18:02:14    阅读次数:105
Python try/except/finally
举例说明一下try/except/finally的用法。 若不使用try/except/finally 输出: 使用try/except/finally: 第一: try不仅捕获异常,而且会恢复执行 输出: 第二:无论try是否发生异常,finally总会执行 输出:(这里没用except,即没有在 ...
分类:编程语言   时间:2016-08-16 20:03:01    阅读次数:210
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