Recent questions tagged Recursion

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I have a very similar situation to this post PHP: nested menu with a recursive function, expand only some nodes ... output of the menu syntax. See Question&Answers more detail:os...

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

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recursion - If the only non-stack-consuming looping construct in Clojure is "recur", how does this lazy-seq work?

The ClojureDocs page for lazy-seq gives an example of generating a lazy-seq of all positive numbers: (defn ... without overflowing the 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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recursion - Recursively counting files with PHP

Simple question for a newb and my Google-Fu is failing me. Using PHP, how can you count the number of files ... I'd greatly appreciate any help. See Question&Answers more detail:os...

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

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recursion - Java : recursive constructor call and stackoverflow error

Please help to understand why does the following code public class HeapQn1 { /** * @param args */ public ... returns. Hope this clarifies. See Question&Answers more detail:os...

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

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recursion - How to calculate how many recursive calls happened in this Haskell function?

I've been trying to figure this out for a couple of hours now. I need to calculate how many recursive ... maximum' xs Many 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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600 views

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recursion - Recursively traversing a tree in C# from top down by row

Interesting problem posed by a friend recently: Imagine you've got a List< NodeType > of all nodes in a tree. ... find the highest node you own? See Question&Answers more detail:os...

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

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recursion - Merge two lists

I am looking to merge 2 lists in F# in a purely functional way. I am having a hard time understanding the syntax. ... :: y:: interleave (xs,ys) See Question&Answers more detail:os...

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

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recursion - How do I recursively search an object tree and return the matching object based on a key/value using JavaScript/Prototype 1.7

I've got some nested object data and I want to search it and return the matching object based on the id. var data ... }) 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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recursion - How would you write a non-recursive algorithm to calculate factorials?

How would you write a non-recursive algorithm to compute n!? See Question&Answers more detail:os...

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

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recursion - Javascript using Fetch and pagination, recursive?

Hello I'm new to Javascript and APIs. But I have an excersise where I should get Data from. https://swapi.co ... .name; console.log(this); } See Question&Answers more detail:os...

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

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474 views

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recursion - Is Erlang's recursive functions not just a goto?

Just to get it straight in my head. Consider this example bit of Erlang code: test() -> receive {From, ... is happening in the Erlang example. See Question&Answers more detail:os...

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

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recursion - Which is faster? Pass by reference vs pass by value C++

I thought that pass by reference should be faster then pass by value because the computer isn't copying data ... rather than const reference? See Question&Answers more detail:os...

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

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454 views

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recursion - PHP - multidimensional array to query string

Searched for so long but didn't get any feasible answer. A) Input: $array = array( 'order_source' => ... array like http_build_query() works. See Question&Answers more detail:os...

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

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678 views

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recursion - Java: Generator of true's & false's combinations by giving the number N;

I tied to simplify the task as much as possible, so I could apply it to my algorithm. And here is the ... about this. Thank you 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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474 views

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recursion - Big O of Recursive Methods

I'm having difficulty determining the big O of simple recursive methods. I can't wrap my head around what happens ... I'm learning.) 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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442 views

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recursion - Recursive mysql select?

I saw this answer and i hope he is incorrect, just like someone was incorrect telling primary keys are ... in postgresql and sqlserver. See Question&Answers more detail:os...

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

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634 views

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recursion - How do I know if a function is tail recursive in F#

I wrote the follwing function: let str2lst str = let rec f s acc = match s with | "" -> acc | _ -> f ... over the resultant string and so on... See Question&Answers more detail:os...

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

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recursion - Construct a tree from list os file paths (Python) - Performance dependent

Hey I am working on a very high performance file-managing/analyzing toolkit written in python. I want to create ... tree list. 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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468 views

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recursion - Why does reduce give a StackOverflowError in Clojure?

I'm trying to concatenate a Seq of Seqs. I can do it with apply concat. user=> (count (apply ... generally inappropriate for large inputs? See Question&Answers more detail:os...

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

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recursion - Explain the continuation example on p.137 of The Little Schemer

The code in question is this: (define multirember&co (lambda (a lat col) (cond ((null? lat) (col (quote ( ... able to understand how it works. See Question&Answers more detail:os...

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

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768 views

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recursion - Can an anonymous method in C# call itself?

I have the following code: class myClass { private delegate string myDelegate(Object bj); protected void method() { ... that it can call itself? See Question&Answers more detail:os...

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

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619 views

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recursion - How do you write a fun that's recursive in Erlang?

I'm trying to write a recursive fun in an Erlang shell, but I keep getting an unbound variable exception: 1> Foo ... of the error I'm getting. See Question&Answers more detail:os...

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

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524 views

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recursion - Reversing a linkedlist recursively in c

The following code works fine when head is sent as a parameter to it. As I am new to C, I couldn't understand how it works ... 4 -> 3 -> 2 -> 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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391 views

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recursion - Recursive Promise in javascript

I'm writing a Javascript Promise that finds the final redirect URL of a link. What I'm doing is making a HEAD ... fly) isn't right, altogether. See Question&Answers more detail:os...

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

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481 views

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recursion - Tail call optimization in Mathematica?

While formulating an answer to another SO question, I came across some strange behaviour regarding tail recursion ... is also welcome. See Question&Answers more detail:os...

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

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779 views

1 answer

recursion - Recursive lambda expression to traverse a tree in C#

Can someone show me how to implement a recursive lambda expression to traverse a tree structure in C#. See Question&Answers more detail:os...

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

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601 views

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recursion - Sieve of Eratosthenes Scheme

I've been searching the web for an implementation of the Sieve of Eratosthenes in scheme and although I ... better understand my predicament. See Question&Answers more detail:os...

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

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453 views

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recursion - Finding all maze solutions with Python

I am trying to find (using Python) all possible solutions to a maze. I have a DFS script that returns one solution. ... 1,GetMap())) print(" ") See Question&Answers more detail:os...

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

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