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Difficulty: Very hardCoding and Decoding

In a standardized coding system:
1. Each consonant in a word is replaced by the letter that is NN positions ahead of it in the English alphabetical order, where NN is the total count of vowels present in that specific word.
2. Each vowel is replaced by its reverse alphabetical counterpart (where A↔ZA \leftrightarrow Z, B↔YB \leftrightarrow Y, etc.), and then shifted backward by 33 positions in the English alphabet.
3. Finally, the sequence of letters obtained is written in reverse order.

If the word PRACTICE is coded as SFOFWUS using this rule, what is the code for the word DIPLOMAT?

Answer: WWPIOSOG / W W P I O S O G / wwpiosog

Answer

WWPIOSOG
The correct answer is obtained by first identifying that DIPLOMAT contains 3 vowels (I, O, A), making N=3N = 3. Each consonant is shifted forward by 3 positions (D →\rightarrow G, P →\rightarrow S, L →\rightarrow O, M →\rightarrow P, T →\rightarrow W). Each vowel is mapped to its reverse letter and then shifted back 3 places (I →\rightarrow R →\rightarrow O, O →\rightarrow L →\rightarrow I, A →\rightarrow Z →\rightarrow W). Combining these gives GOSOI PWW, which when reversed yields WWPIOSOG.

Step-by-Step Solution

1
Count the number of vowels in the target word DIPLOMAT to determine the consonant shift parameter NN.
The vowels in DIPLOMAT are I, O, and A. The total number of vowels is N=3N = 3.
Rule 1 requires shifting consonants forward by the number of vowels in the word.
2
Apply Rule 1 to all consonants in DIPLOMAT by shifting each forward by 33 positions.
D →\rightarrow G, P →\rightarrow S, L →\rightarrow O, M →\rightarrow P, T →\rightarrow W.
Consonants shift forward by N=3N=3 positions in alphabetical order.
3
Apply Rule 2 to all vowels in DIPLOMAT by finding their reverse alphabetical counterpart and shifting backward by 33 positions.
I (opposite R) →\rightarrow R - 3 = O; O (opposite L) →\rightarrow L - 3 = I; A (opposite Z) →\rightarrow Z - 3 = W.
Vowels undergo reverse alphabetical substitution followed by a 3-position backward shift.
4
Assemble the transformed letters in original sequential order and reverse the entire string.
Forward order: G O S O I P W W. Reversed string: W W P I O S O G.
Rule 3 dictates reversing the entire transformed character sequence.

Key Concept

Multi-rule Alphanumeric Transformation and Positional Reversal
Estimated Time:2m 30s
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Topics

Coding and Decoding

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