Question

I must use 2d arrays in my code and I am having a lot of trouble splitting the string in to a 1d array and storing it in a position in my 2d array testCases[][]. I am using the split function after I read in the string from the text file, to create an array of characters. Everything in my code below seems to make sense to me, however, when I try to iterate and print out the testCases array to ensure I collected the right data, it is printing out incorrect data.

I appreciate any help with figuring this one out, I have spent hours on this one problem.

Many thanks in advance.

//Read number of test cases 
String x = fin.nextLine();
int numTests = Integer.parseInt(x);

//create array
testCases = new String[numTests][100];

//Read actual test cases and store in 2d array
for(int i = 0; i < numTests; i++){
    String testCaseString = fin.nextLine();

    //System.out.println(testCaseString);                   
    testCases[i] = testCaseString.split("(?!^)"); 
    System.out.println(testCases[i][0]);
}
for(int z=0; z < numTests; z++){
    for(int q=0; q  < z; q++){
        System.out.printf("%s ", testCases[z][q]);
    }
    System.out.println();
}

Test Cases – Text file position

2
bcb
c

Current Console Output

c

Desired console Output

b c b
c

Answer 1

You have problems with outputting the data.

Try

for(int z=0; z < numTests; z++){
    for(int q=0; q  < testCases[z].length; q++){
        System.out.printf("%s ", testCases[z][q]);
    }
    System.out.println();
}

In the inner loop you should iterate until testCases[z].length.