[OTHER] Java Implementation of Playfair Cipher #5026
Description
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Issue:
https://github.com/TheAlgorithms/Java/blob/master/src/main/java/com/thealgorithms/ciphers/ProductCipher.java
The shifting of the characters is constant, but it should be determined by user input.
Solution:
Substitute '5' for 'n'
Additional information
`System.out.println("Enter a number: ");
int n = sc.nextInt();
// Substitution encryption
StringBuffer substitutionOutput = new StringBuffer();
for (int i = 0; i < substitutionInput.length(); i++) {
char c = substitutionInput.charAt(i);
substitutionOutput.append((char) (c + 5)); // <---- should be n instead of 5
} ...
StringBuffer plaintext = new StringBuffer();
for (int i = 0; i < transpositionPlaintext.length(); i++) {
char c = transpositionPlaintext.charAt(i);
plaintext.append((char) (c - 5)); // <---- same here
}