ARRAYS - Java Programming: From Problem Analysis to Program Design - page 609

codeLength = console.nextInt(); //Step 3

System.out.println();

int [] codeArray = new int [codeLength]; //Step 4

readCode(codeArray); //Step 5

compareCode(codeArray); //Step 6

}

//Place the definition of the method readCode as
//described earlier here.
//Place the definition of the method compareCode as
//described earlier here.

}

Sample Run: (In this sample run, the user input is shaded.)

Enter the length of the code: 7

Enter the secret code: 9 2 7 8 3 5 6

Enter the length of the copy of the secret code
and a copy of the secret code:
7 9 2 7 8 3 5 6

Code Digit Code Digit Copy
9 9
2 2
7 7
8 8
3 3
5 5
6 6
Message transmitted OK.

9

PROGRAMMING EXAMPLE: Text Processing
Let's now write a program that reads a given text, outputs the text as is, and prints the
number of lines and the number of times each letter appears in the text. An uppercase
letter and a lowercase letter are treated as being the same; that is, they are tallied together.
Because there are 26 letters, we use an array of 26 elements to perform the letter
count. We also need a variable to store the line count.
The text is stored in a file, which we will call text.txt . The output will be stored in
a file, which we will call textCh.out .