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Reverse String
Reverse String

Reverse String

Easy
OverviewCommunity Solutions

Introduction

Reversing strings (reading them from right to left, rather than from left to right) is a surprisingly common task in programming.

For example, in bioinformatics, reversing the sequence of DNA or RNA strings is often important for various analyses, such as finding complementary strands or identifying palindromic sequences that have biological significance.

Instructions

Your task is to reverse a given string.

Some examples:

  • Turn "stressed" into "desserts".
  • Turn "strops" into "sports".
  • Turn "racecar" into "racecar".

Bonus

Preserve grapheme clusters, i.e.

myreverse("hi ๐Ÿ‘‹๐Ÿพ") == "๐Ÿ‘‹๐Ÿพ ih"
myreverse("asโƒdfฬ…") == "fฬ…dsโƒa"

You will probably find the Unicode stdlib useful for this bonus task.

To enable the graphemes test, add const TEST_GRAPHEMES = true to the global scope of your file.

Source

Introductory challenge to reverse an input stringThe link opens in a new window or tab
Edit via GitHub The link opens in a new window or tab
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Deep Dive into Reverse String!

Explore 14 different ways to reverse a string, exploring a range of topics including Unicode Codepoints, Graphemes, Stack vs Heap allocations, and pointers. Kick back and enjoy 45mins of learning with Jeremy and Erik.