arrays

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numpy ndarrays: row-wise and column-wise operations

If I wanted开发者_Python百科 to apply a function row-wise (or column-wise) to an ndarray, do I look to ufuncs (doesn\'t seem like it) or some type of array broadcasting (not what I\'m looking for eith[详细]

2023-04-12 15:53 分类：问答
showing that any algorithm that accesses an array only by comparisons takes sigma(logn) steps

F开发者_StackOverflow中文版or this I think to properly solve it I need to show that sigma(logn) is its lower bound. I know all of the comparisons in my book run in O(nlogn), but im not sure how to f[详细]

2023-04-12 15:48 分类：问答
Interpolating a 3d array in Python. How to avoid for loops?

I have an array which I want to interpolate over the 1st axes. At the moment I am doing it like this example:[详细]

2023-04-12 15:27 分类：问答
Search for element in array of composite types

Using PostgreSQL 9.0 I have the following table setup CREATE TABLE person (age integer, last_name text, first_name text, address text);[详细]

2023-04-12 15:06 分类：问答
Need to convert JSON to an Array in same order

I need to use a huge JSON with 8000 elements (classes/subclasses) in it. I need to get it as a straight array (1-8000) in same sequence. Can i do with out creating classes?[详细]

2023-04-12 14:37 分类：问答
Jquery object search

I have the following object and what I would lik开发者_如何学JAVAe achieve is to get the index of theme if the name has match with a variable.[详细]

2023-04-12 14:24 分类：问答
How to split an array via value change on one of the keys?

I have a returned the rows from a database and joined from another table to get a brand for each product, I want to be able to split[详细]

2023-04-12 14:17 分类：问答
Processing language: Get inner array values from ArrayList()

I\'m trying to use the ArrayList() method in Processing. I have this: ArrayList trackPoints = new ArrayList();[详细]

2023-04-12 13:38 分类：问答
Finding values based on array index in List<string[]>

I have an array structured like this: {\"nick\", \"sender\", \"message\"} arranged into a List<string[]>.[详细]

2023-04-12 13:31 分类：问答
How to synchronize single element of integer array?

If I want to lock the whole array I can use the synchronized keyword like this: int arr[]; synchronized void inc(int a, int b){[详细]

2023-04-12 13:20 分类：问答