Java: How to create char arrays using Random Class Based on User Input on Length of Array?

Question

I have to create a program for school that asks the user how many letter he wants to create, and if he says for example 8, it will create the following:

char[] letters = new char[8]

It will then assign a random letter to each array indexes (0 to 7) and then the user has to guess the code comprised of 8 letters.

All I know about using random class is this:

letterValue = (char) (rand.nextInt(26) + 'a'); // Creates random letters a to z.

So how would I assign the 8 random letters to each index?

Kishore Bandi · Accepted Answer · 2016-12-02 04:31:30Z

1

Use a for loop for the total number of characters that user inputted.
Each random character you generate needs to be stored at an index in the array.

int numberOfCharacters = 8;
char[] letters = new char[numberOfCharacters];
Random random = new Random();
for(int i = 0; i < numberOfCharacters; i++) {
    letters[i] = (char) (random.nextInt(26) + 'a');
}

answered Dec 2, 2016 at 4:31

Kishore Bandi

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3 Comments

Majestic Over a year ago

Thank you! Very helpful and simple to understand.

Kishore Bandi Over a year ago

@Majestic Welcome! Can you close out the question by accepting the answer?

Majestic Over a year ago

Sorry I'm new to Stackoverflow, so new to the features, but here you go. Thanks again!

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