Why does my Python linked-list reversal loop create a cycle?
I'm trying to reverse a singly linked list in Python, but my loop does not terminate as expected. Here is the current implementation: class Solution: def reverseList(self, head:…
loops
When did programming concepts start to feel intuitive for you?
I just started learning C++ and we are two weeks into topics like loops and sentinel values. I usually follow the lectures and can reproduce examples on my…
When should I use a loop instead of a built-in function?
I often solve a problem with a manual loop, only to discover later that the language already provides a built-in function or standard-library method for it. In general,…
How Can I Get Comfortable Using JavaScript Functions Inside Loops?
I'm new to JavaScript and understand the basic idea of functions and loops separately, but I struggle when I need to combine them in actual code. I'm often…
How Can I Get Comfortable Using JavaScript Loops and Functions Together?
I'm new to JavaScript and understand the basic ideas behind functions and loops separately, but I get stuck when I have to write code that uses them together.…
Should I Learn to Write Loops and Functions From Scratch for AI/ML Engineering?
I'm learning programming with the goal of becoming an AI/ML engineer. Since libraries provide thousands of ready-made functions, should I still practice writing loops and functions myself? I'm…
Do Python developers actually use the walrus operator?
I've always thought Python's walrus operator (:=) was neat, especially for making some while-loop conditions clearer. At the same time, it mostly seems like syntactic sugar rather than…
Can a ForEach-Object script block contain multiple lines and commands?
I'm learning PowerShell and understand that a simple command like `$mySet | ForEach-Object { $_ }` outputs each item in the collection. Can the `{}` script block contain…
When Should I Use Functions and Loops in JavaScript DOM Projects?
I recently started learning JavaScript and have been practicing a lot, but I get stuck when applying it to my own projects. I understand some of the syntax,…
Tips for Efficiently Using Loops in Python
I'm a beginner learning Python and currently focusing on foundational concepts like loops and conditionals. I've got a good handle on how a `for` loop operates, but I'm…
Struggling to Understand JavaScript Basics – Need Help!
I've been teaching myself programming since July 2025, and I've managed to get a grasp on HTML and CSS without a hitch. However, when I switched to JavaScript,…
How Can I Improve My Problem-Solving Skills in Programming?
I've been learning Java and started off strong, but I hit a wall with concepts like loops, arrays, and methods. I feel like whenever I encounter a slightly…
Why is my Bash loop only running once?
I'm trying to generate a passphrase using a loop in my Bash script, but it seems to run only once. Here's the setup: I've got a variable that…
Does JavaScript's map() Function Use a Loop Internally?
I'm curious about the inner workings of the map() function and similar methods in JavaScript. More specifically, how do they iterate? Are these functions using a loop behind…
How can I check if a 3-digit number is a palindrome without using arrays?
I'm trying to write a program that checks if a 3-digit number is a palindrome, meaning it should read the same when reversed. Here's the code I've come…
What Are the Performance Differences Between For Loops and Foreach Loops?
I'm really into optimizing my code and I'm curious if anyone has benchmarks or tests comparing the performance of different types of loops in PowerShell, such as for…
Is There a Modern Equivalent to the Goto Statement in PowerShell?
I'm searching for a way to achieve what the 'Goto' command does in Basic programming, specifically within PowerShell. I have a simple script structure in mind: ``` #start…
What are some good exercises to help me learn Java loops and arrays?
Hey everyone! I'm fairly new to coding and currently diving into Java, specifically working on loops right now. I've found some parts tricky, especially with understanding how loops…
How can I get better at understanding Python's lambda functions and loops?
I'm trying to get a grip on Python, but I'm having a hard time understanding lambda functions and any type of loops. I'd love some tips on how…
Struggling to Get the Hang of JavaScript—Any Tips?
Hey everyone! I've been diving into JavaScript for about six months now, after picking up HTML and CSS pretty easily. But honestly, JavaScript has me feeling lost. I'm…