Reverse Characters in Each Word

Reversing Characters Within Each Word

This operation reverses the characters inside each word but keeps the words in their original order. It is a hybrid of character reversal and word-level preservation.

Example

Input:  "Hello World"
Output: "olleH dlroW"

Each word is reversed individually, but "Hello" still comes before "World".

Implementation

JavaScript:

const result = str.replace(/\S+/g, word => [...word].reverse().join(""));

Python:

result = " ".join(word[::-1] for word in text.split(" "))

How It Differs from Other Modes

Mode	Input	Output
Reverse characters	"Hello World"	"dlroW olleH"
Reverse words	"Hello World"	"World Hello"
Reverse each word	"Hello World"	"olleH dlroW"

Preserving Whitespace

A common edge case is preserving the exact whitespace pattern. If the input has multiple spaces or tabs between words, the regex approach /\S+/g preserves them:

Input:  "Hello    World"
Output: "olleH    dlroW"

Multi-line Support

When processing multi-line text, each line should be handled independently:

Input:
  "Hello World"
  "Good Morning"

Output:
  "olleH dlroW"
  "dooG gninroM"

Practical Applications

• Obfuscation: Light text scrambling that preserves word boundaries
• Word games: Creating puzzles where readers must mentally reverse each word
• Testing: Generating test data with reversed words while maintaining structure