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pickle 模块
序列化和反序列化的定义 序列化:就是把不可传输的对象转换为可存储或可传输的过程 反序列化:就是把在磁盘,等介质中的数据转换为对象 import pickle #dic={'name':'alex','age':23,'sex':'male'} # print(type(dic))# # j=pick... ...
分类:其他好文   时间:2018-11-13 18:04:42    阅读次数:153
折线图返回值---每一天的值
SELECT A.datelist AS pick_dt, IFNULL(B.pick_cnt, 0) pick_cnt, IFNULL(B.cust_cd, 0) cust_cd //IFNULL(A,B) --如果结果不等于null,则返回A,等于null,就返回BFROM calendar A ...
分类:其他好文   时间:2018-11-09 10:47:37    阅读次数:145
375. Guess Number Higher or Lower II
We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which number I picked. Every time you guess wron... ...
分类:其他好文   时间:2018-11-08 18:30:59    阅读次数:215
528. Random Pick with Weight
Given an array w of positive integers, where w[i] describes the weight of index i, write a function pickIndex which randomly picks an index in proport... ...
分类:其他好文   时间:2018-11-08 18:17:49    阅读次数:213
374. Guess Number Higher or Lower
We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which number I picked. Every time you guess wron ...
分类:其他好文   时间:2018-11-05 10:10:23    阅读次数:185
Altium Designer 10如何导出SMT加工信息和BOM元件清单
要委托工厂进行SMT加工,需要向工厂提供表贴元器件的位置信息(Pick Place),这些信息可以由csv保存下来。 步骤如下: 一、设定坐标原点,一般设为板子左下角,在Keepout划线的顶点处。 E O S,左键点击新的原点位置,完成坐标原点设定。 二、生成Pick and Place文件。 F ...
分类:其他好文   时间:2018-11-03 15:22:23    阅读次数:496
710. Random Pick with Blacklist
Given a blacklist B containing unique integers from [0, N), write a function to return a uniform random integer from [0, N) which is NOT in B. Optimiz ...
分类:其他好文   时间:2018-10-31 19:58:08    阅读次数:119
528. Random Pick with Weight
每个位置都是边界 二分法找 ...
分类:其他好文   时间:2018-10-28 11:15:24    阅读次数:176
398. Random Pick Index
1 class Solution { 2 Random random = new Random(); 3 int[] arr; 4 5 public Solution(int[] nums) { 6 arr = nums; 7 } 8 9 public int pick(int target) { ... ...
分类:其他好文   时间:2018-10-28 11:15:11    阅读次数:120
[leetcode]528. Random Pick with Weight按权重挑选索引
Given an array w of positive integers, where w[i] describes the weight of index i, write a function pickIndex which randomly picks an index in proport ...
分类:其他好文   时间:2018-10-24 10:47:42    阅读次数:313
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