Recent questions tagged Arrays

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arrays - Strange golang "append" behavior (overwriting values in slice)

I have this simple code: import "fmt" type Foo struct { val int } func main() { var a = make([]*Foo, 1) a[0 ... {3} {3} {3}. What happened here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Convert List<Object> to String[] in Java

I need to convert from List<Object> to String[]. I made: List<Object> lst ... String arr = lst.toString(); ... I need String[] Thanks a lot. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Remove object from a list of objects in python

In Python, how can I remove an object from array of objects? Like this: x = object() y = object() ... addressing its position(remove array[0]) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Go slices - capacity/length?

Trying to learn Go from the tutorial right now, and have a pretty basic question: func main() { a := ... ? Very confused. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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951 views

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arrays - Javascript: Using reduce() to find min and max values?

I have this code for a class where I'm supposed to use the reduce() method to find the min and max values in ... ); } ); return minMaxArray; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - C#, a String's Split() method

C#, a String's Split() method, how can I put the resulting string[] into an ArrayList or Stack? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - How to convert a sbyte[] to byte[] in C#?

I've got a function which fills an array of type sbyte[], and I need to pass this array to another function ... the data or using unsafe magic? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - How do I initialise all entries of a matrix with a specific value?

In Haskell, if I wanted to get a 10 element list which only contained the number 5, I could do something ... there anything like this in Matlab? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Minimum value of maximum values in sub-segments ... in O(n) complexity

I interviewed with Amazon a few days ago. I could not answer one of the questions the asked me to their ... complexity O(n). Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Comma-separated string to NSArray in Objective-C

So I have no experience with arrays... But I need to use one to populate a UIPickerView. I am obtaining a list of ... addObject:@"item 1"];)?? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - How to access a column in a list of lists in python

I have a 2D array in python modeled by a list of lists and I want to extract the column. I made a ... without a shortcut. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Does PHP have an equivalent to Python's list comprehension syntax?

Python has syntactically sweet list comprehensions: S = [x**2 for x in range(10)] print S; [0, 1, 4, 9, ... new features in PHP 5.3? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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905 views

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arrays - How do you concatenate Lists in C#?

If I have: List<string> myList1; List<string> myList2; myList1 = getMeAList(); // Checked myList1, it contains 4 ... four strings. Why is that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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989 views

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arrays - 2D peak finding algorithm in O(n) worst case time?

I was doing this course on algorithms from MIT. In the very first lecture the professor presents the following problem: ... a, b)) return answer See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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arrays - Find shortest subarray containing all elements

Suppose you have an array of numbers, and another set of numbers. You have to find the shortest subarray ... (a la online algorithms)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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977 views

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arrays - Number of subarrays divisible by k

I had the following question in an interview and, in spite of the fact that I gave a working implementation, it wasn't ... , -3} {-2, -3} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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967 views

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arrays - Unlimited arguments in a JavaScript function

Can a JavaScript function take unlimited arguments? Something like this: testArray(1, 2, 3, 4, 5...); I am trying: var ... , d, e...) { } Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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886 views

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arrays - Find the element repeated more than n/2 times

There is an array (of size N) with an element repeated more than N/2 number of time and the rest of the ... better solution, there has to be. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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arrays - What does $0 and $1 mean in Swift Closures?

let sortedNumbers = numbers.sort { $0 > $1 } print(sortedNumbers) Can anyone explain, what $0 and $1 means in ... forEach { actions.append($0) } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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917 views

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arrays - Python: Differentiating between row and column vectors

Is there a good way of differentiating between row and column vectors in python? So far I'm using ... differentiate for my own convenience. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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795 views

1 answer

arrays - How to map with index in Ruby?

What is the easiest way to convert [x1, x2, x3, ... , xN] to [[x1, 2], [x2, 3], [x3, 4], ... , [xN, N+1]] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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897 views

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arrays - Faster way of using Sumifs()

I have a weekly task where I need to update a report (currently just over 50K rows) which is growing by around ... = .Value End With End Sub See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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arrays - C++ No-repeat random number generator

I need to create algorithm implementation in C++ to generate random numbers to f.e table without repeat and list. I ... ("pause"); return 0; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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828 views

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arrays - Element wise multiplication of every row/column of a matrix with a vector

I have a matrix, named as p_c_w having dimensions 6X7599 and the other matrix named as p_w having dimensions 1X7599. I ... ).*p_w(j); end end See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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715 views

1 answer

arrays - How to speed up reshape in higher rank tensor contraction by BLAS in Fortran?

Related question Fortran: Which method is faster to change the rank of arrays? (Reshape vs. Pointer) If I ... there is a convenient solution. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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847 views

1 answer

arrays - Initiate React components with data from Firebase database?

I'm new to web development. In my site I have a message board when people can write to my Firebase Realtime ... {title of message #5}<div>) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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911 views

1 answer

arrays - PHP syntax for dereferencing function result

Background In every other programming language I use on a regular basis, it is simple to operate on the return value of a ... ->{0}; // <- nope See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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821 views

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arrays - Dynamic parameterization of Armadillo matrix dimensions in C++

The title summarizes the goal that is more exactly to dynamically retrieve the number of dimensions of MATLAB ... ; #endif // SUB_H_INCLUDED See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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