Substitution project and Scrabble lab: Finding analogy

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ust started with the Substitution project.

It appears there is a close analogy between Substitution project and Scrabble lab.

In Scrabble lab, POINTS is an array that contains allotted value to the 26 alphabets. A = 1, B = 3…

In Substitution project: A will be alloted the first character entered by the user as plantext, B second character….

Am I correct?

Here is my rough pseudocode:

Make two arrays as reference point:

Array 1       Array 2
A                a
B                b
C               c
… Z            … z

Make two arrays based on key value for each character entered by the user in argv[1]. Say ntf…e

Key 1            Key 2
N                  n
T                   t
F                   f
…E                … e

Suppose the user enters in plain text: Rajeev

R as first character will be checked in Array 1 and Array 2. Once R detected, corresponding value in Key 1 will be replaced.

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Reply

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There’s not really much point in having array1 or array2. After all, you know what order the alphabet is in. G will never be anywhere other than index 6, so you can just skip those first two arrays entirely and go straight to looking at index 6 of your key.

Other than that you definitely seem to be on the right track

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