Reverse Cipher
The Reverse Cipher (also known as the backwards cipher) is a simple transposition cipher where the order of letters in the word is reversed. For example, 'HELLO' becomes 'OLLEH'. This cipher is often combined with other ciphers in competitive exam problems.
What You'll Learn
Introduction to Reverse Cipher
The Reverse Cipher (also known as the backwards cipher) is a simple transposition cipher where the order of letters in the word is reversed. For example, 'HELLO' becomes 'OLLEH'. This cipher is often combined with other ciphers in competitive exam problems.
Prerequisites
How to Solve Reverse Cipher Problems
Step 1: Write the given word clearly
Step 2: Reverse the order of letters (first becomes last, last becomes first)
Step 3: The reversed string is the encoded or decoded word
Step 4: Since reversal is its own inverse, the same process decodes
Example Problem
Example: Decode 'OLLEH' using reverse cipher. Solution: Step 1: Given word: O L L E H Step 2: Reverse order: H E L L O Step 3: Decoded word: HELLO Answer: HELLO
Pro Tips & Tricks
- Reverse cipher is also called the 'backwards cipher' or 'mirror order cipher'
- It is often combined with other ciphers in multi-step problems
- Palindromes (words that read the same forward and backward) remain unchanged
- Examples of palindromes: 'MADAM', 'RACECAR', 'LEVEL', 'CIVIC'
- Common encoded words: 'OLLEH' (HELLO), 'DLROW' (WORLD), 'EPYTHON' (NOHTYPE)
- The reversal operation is its own inverse (involution)
Shortcut Methods to Solve Faster
Common Mistakes to Avoid
Practice Worksheets
Practice makes perfect! Work through these worksheets to master Reverse Cipher. Each worksheet contains 20 questions with detailed explanations. Start from Worksheet 1 and progress through increasing difficulty levels.
Exam Importance
Reverse Cipher is an important topic for various competitive exams. Here's how frequently it appears:
Ready to Master Reverse Cipher?
Start with Worksheet 1 and work your way up to expert level! Each worksheet includes: