There is no built in reverse method for Python's str object. How can I reverse a string?

I've always been bothered by the fact that there weren't any built-in functions that could replace multiple substrings of a string in Python, so I created this function. Essentially, you supply it ...

How do I iterate over a list in reverse in Python? See also: How can I get a reversed copy of a list (avoid a separate statement when chaining a method after .reverse)?

Sep 4, 2018 · The key issue is the line output += k --- this rebuilds the string for each additional character as strings are immutable in Python (see Shlemiel the painter's algorithm). You're …

Additionally, Python imposes a limit on stack size, and there's no tail call optimization, so a recursive solution would be limited to reversing strings of only about a thousand characters. …

Aug 21, 2015 · A python3 compatible version, leveraging struct and itertools note that I've changed the names of the functions, as hex_to_guid is a misnomer if the input is in bytes, as …

Jun 26, 2023 · If you look at Python's intermediate code (see Godbolt Compiler Explorer), you can also see that slicing is its own operation, so it's pretty much optimized as well. So, s[::-1] is the …

Sep 7, 2020 · Problem: Write a while loop that starts at the last character in the string and works its way backwards to the first character in the string, printing each letter on a separate line.

Python will "do the right thing" when filling in the start and stop so it iterates through the list backwards and gives you [10,9,8,7,6,5,4,3,2,1]. I've given the examples with lists, but strings …

Oct 16, 2020 · Generally, I prefer list comprehensions over an explicit loop; they're often faster Creating a function called reverse_string is unnecessary - the idiomatic/Pythonic way to do this …