Questions tagged [iteration]
Iteration is the repetition of a block of statements within a computer program, usually with mutable state.
4
votes
1answer
89 views
Walking over a N branching tree
The aim of this code, written in Python3.6, was to write a function that will non-recursively walk over a N-branching tree structure.
It works by using a list of indices that keep track of visited ...
2
votes
2answers
60 views
A Java Iterable over multiple arrays
GlueArrays is used for iterating over an array of arrays, and it looks like this:
Main.java
...
-1
votes
0answers
19 views
Copy values between pandas dataframe columns [migrated]
I spent a good deal of yesterday trying to copy the values in one column (columnA) of a pandas dataframe to another column (columnB) in the same dataframe. The columns are floats with numeric and NaN ...
2
votes
2answers
39 views
Iterating through two objects with different structures in parallel
I have two objects, one input = Array<Type> and one stored = Array<{..., Type}>
What's the best (cleanest) way to ...
2
votes
1answer
67 views
Write a function that adds two numbers stored in a linked list and returns the sum
Just for fun I did the following exercise from "Cracking the coding interview. 4th edition":
You have two numbers represented by a linked list, where each node
contains a single digit. The digits ...
2
votes
3answers
78 views
Check if a postcode is in a list
I'm looking for improvement / advice / reviews on how I can improve this code. I feel like there is a better way or more efficient way of doing this and I am over looking it.
The Plugin I made is ...
3
votes
0answers
13 views
IDL code for minimum distance calculation
I made a program in IDL for performing a minimum distance classification on multispectral satellite data. This is what my main function looks like:
...
1
vote
1answer
71 views
Creating objects from xml-data
I've got an XML file with some info about hosts connected to my home network and I would like to create objects containing that info in a neat way, so that I can make some nice front-end application ...
2
votes
0answers
29 views
Speed up iteration for large dataset in python
I'm trying to parse data into a csv prior to a bulk transaction into Neo4j. I'm using vast amounts of data in the relationships and wondered if anyone could help in speeding up the transactions below....
2
votes
1answer
47 views
Web scraping JSON-data from API put into Dataframe
The web-scraping process currently takes quite a bit of time, and I wonder if I can structure the code otherwise or improve it in any way.
Code looks like this:
...
18
votes
7answers
8k views
FizzBuzz in Javascript
I'm sure everyone here knows what FizzBuzz is. I would like constructive criticism for my solution.
I'm a beginner to programming as a whole and this isn't my first solution, but it's what I think is ...
4
votes
3answers
123 views
Java Magic square program
Here is my improved version of my Magic square program from following this earlier version.
I also added a few comments.
Any help for improvements would be really appreciated.
...
0
votes
1answer
37 views
Generating probability table of 2-character combinations from text file in Java
I have written a probability table generator in Java to help me generate randomized girl's names for the game I am making.
It reads from a text file and creates a ...
3
votes
2answers
54 views
Storing statistics as JSON in a simulation game
I am working on a choice-based simulation and players have to choose between different locations, I am pushing those choices to an array locationLog and my ...
2
votes
3answers
90 views
1
vote
6answers
1k views
Elegantly exclude part of an operation for the last iteration in a loop [closed]
I'm afraid just about everybody who read this question has misunderstood it. I'm not trying to find the best way of printing a vector. I'm trying to find the best way of excluding part of an operation ...
2
votes
1answer
34 views
Finding the Original Fractions from Rounded Decimals
The data I'm using is summoning rates from a gacha game, One Piece Treasure Cruise. The game provides the probability of getting a certain character in percents rounded to the nearest thousandth. ...
2
votes
2answers
60 views
Collect members from custom tree nodes
In my program, I have a tree of Group nodes, each identified by their ImportId.
Each group has zero or more members, that I ...
3
votes
1answer
55 views
Toggle Event Delegation
NOTE: the Javascript is all I'm concerned about, the HTML/CSS is just DEMO code. One caveat is ARIA states or attributes, if you have input on that, by all means, dive in.
I had the need for and ...
1
vote
1answer
75 views
Short Ruby program that opens a random video file from a directory
I am currently learning to code in ruby. I have created a small program that iterates through a directory of video files and opens one at random. The program is fully functioning (with the odd issue). ...
3
votes
1answer
128 views
C++ inorder traversal of binary tree
The challenge was to create a function which performs an in order traversal without using recursion. What I came up with was to use a stack and some clever popping and pushing. I was wondering if ...
0
votes
1answer
32 views
Process CSV files that follow the first nonempty one
I have a list of CSV files (all have the same fields), some of which are empty. My goal is to find the first nonempty file and use that as the "base" file for an aggregation. After finding the base ...
2
votes
1answer
64 views
Iteratively simulate a parasite population
I'm trying to build a simulation in R to model the effects of different parasite egg laying behaviors on how many offspring the parasite has, given a limited amount of resources. In brief, this ...
3
votes
3answers
274 views
Effieciently validate multiple DataRows with return early option
I'm looking for an efficient way to validate multiple rows originating from multiple .csv files. Below is the current code to accomplish that.
The validation logic is in the function ...
1
vote
1answer
39 views
Merging and summing multi-dimensional arrays
I've found myself today really struggling with this subject and I'm pretty sure that there must be a better way to do this.
First of all my arrays have the same layout, I need to merge them and sum ...
3
votes
1answer
270 views
Plotting quadratic equations with varying parameters
On Wikipedia, there is a graph shown:
It shows the quadratic \$y = ax2 + bx + c\$, varying each coefficient separately while the other coefficients are fixed (at values a = 1, b = 0, c = 0)
As a ...
0
votes
1answer
111 views
Retrive relation on a polymorphic model
I have a Game model that is "static". Containing game information and such, and users can comment on all games.
Games model
<...
1
vote
4answers
134 views
Find value that occurs in odd number of elements
I am trying to solve the following exercise using Javascript:
A non-empty array A consisting of N integers is given. The array contains an odd number of elements, and each element of the array can be ...
3
votes
1answer
41 views
D minMax function implementation
I happened to need to find both the maximum and the minimum of an array, so I decided to implement a minMax function in D.
Questions:
Is this an efficient ...
0
votes
1answer
56 views
VBA code which creates a daily report, based on data gathered in Worksheets in an Excel Workbook
I'm looking for some enlightening, since I'm still learning to code in VBA. I'm running code to create a daily report. It has to compare dates and check certain values in those dates and based on that ...
4
votes
2answers
3k views
Median Filter Implementation In Python
I implemented median filter in Python in order to remove the salt & pepper noise from the images. It is working fine and all but I would love to hear your advice or opinions.
...
4
votes
3answers
422 views
Using an offset variable to keep track of the next item in a Rust array
I am using an offset variable to track the iteration position, and modifying / returning it. Is the below considered bad practice in Rust? I ask this because I don'...
2
votes
1answer
2k views
Script to load controllers dynamically for AngularJS
I would like to hear your thoughts, idea's or feedback on the following code.
Ive added to code to github.
https://github.com/redbullzuiper/angularjs-dynamic-controllers
Usually when you attach a ...
5
votes
1answer
2k views
Check if multiple lists contain an element from a large external list
I have a list of lists (many tokenised sentences). For anyone who doesn't know what tokenised sentences are, my list is like so:
...
2
votes
2answers
138 views
Iterative version of Hanoi Tower exercise
I just finished a iterative version of Hanoi Tower.
This is how the algorithm works:
I'm trying to find a method to delete the goto instruction. Any tips?
...
1
vote
1answer
51 views
Simple backtracking code
Is this good or can it be improved? The program should backtrack the two variables until this logic operation is true: a & b.
...
1
vote
2answers
5k views
Iterate two lists and find matches
I have 2 lists with varying length. Both lists contain data which has to be matched with entries from the other list. Currently I am iterating both lists with a nested ...
10
votes
1answer
4k views
Remove all values duplicates from list
I'm new to programming in general, started on boxing day. I'm trying to
learn python.
The list remove method only removes the first instance of the value found.
In the code below I attempted to ...
8
votes
2answers
1k views
Interleave two lists of strings
I've got a fairly simple task here, but I think it's worth trying to perfect the implementation, because I can probably learn a thing or two about using .NET's enumerables correctly in the process.
I ...
6
votes
1answer
84 views
A database of books, part 1
Backstory
I collect books. A lot of books. Whitepapers, (programming) cookbooks, transcripts, important letters, overviews, you name it. Usually in PDF, otherwise my house would be too small.
To ...
5
votes
0answers
65 views
4
votes
1answer
474 views
Check if two date ranges overlap by X minutes
I have a list of volunteer shifts. The shifts are time ranges- for example, 9AM-2PM and 12PM-5PM. I need to check by how many minutes multiple selected shifts overlap, and then throw an error if the ...
10
votes
10answers
5k views
Tests for palindromes in C and C++
A question I've been asked on interactive phone screens is to code a test to determine whether a string is
a palindrome or not. I am providing two examples here: one in C and one in C++. They both ...
2
votes
1answer
1k views
find the index of subarray from a parent array
Are there any improvements that can be made on the below code, especially in terms of memory and time? I feel bad about setting found = false in every iteration of ...
1
vote
1answer
1k views
Checks size of and number of files in each subdirectory
The code snippet here checks in every folder for subfolders, and stores the sub-sub folders
This is my sample directory structure. I want to read through every sub-folders to find the number of files ...
5
votes
1answer
1k views
Iterative in-place quicksort
I have implemented an iterative in-place quicksort algorithm in Python, which by default selects the pivot as the last element:
...
4
votes
2answers
1k views
PHP loop to generate an HTML form for the days in the coming week
There are two arrays, $states and $weekdays. I want to loop through them to create a form, an HTML table, or possibly some other ...
3
votes
1answer
130 views
Bill settlement for multiple users
I want to improve the logic for bill settlement and calculation of amount due. I managed to write code with T.D.D., but I think those loops could be improved somehow. Do you have any ideas on that ...
6
votes
5answers
2k views
Find number repeated odd times in array
I completed the following exercise:
You are given an array of repeating numbers. All numbers repeat in an even way, except for one. Find that odd occurring number.
...
1
vote
1answer
39 views
JointIterable: iterates over all elements of a list of collections
I have this small utility class that allows me to iterate over a series of collections. Please tell me anything that comes to mind.
JointIterable.java
...
