create 2 dimensional array and fill first array with 1-variable

Question

I am getting an error cannot convert int to int[], can anyone help please?

//Create array
int [][] studentResults = new int [numStudents][numExams];

//Fill 1st dimension with Student numbers 1 through numStudents
for (int count = 0; count < numStudents; count++)
    studentResults[count][] = count + 1;

Trying to create 2 dimensional array. Fill first with a number of students and the second with user input exam scores. User can check on final grade — user2518318
– user2518318, Commented Jun 25, 2013 at 2:13

Code-Apprentice · Accepted Answer · 2013-06-25 02:21:03Z

1

In Java, if you want to assign a value to an entry in an array, you need to specify all of the instances for the array. I would suggest the following:

//Create array
int [][] studentResults = new int [numStudents][numExams];

//This loops through the two dimensional array that you created 
//And fills the 1st dimension with Student numbers 1 through numStudents.
for (int count = 0; count < numStudents; count++)
    for (int exam = 0; exam < numExams; exam++)
        studentResults[count][exam] = count + 1;

thereby iterating through every exam entry of studentResults for each student.

edited Jun 25, 2013 at 2:21

Code-Apprentice

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answered Jun 25, 2013 at 2:13

Miles Yucht

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1 Comment

stinepike Over a year ago

no need to set the other column value.. only need to set the first column

stinepike · Accepted Answer · 2013-06-25 02:18:57Z

1

So you need to set the value of first column of each row. As we know the first column index is 0. So for each row set the 0 column of the array like this

for (int count = 0; count < numStudents; count++)
    studentResults[count][0] = count + 1;

answered Jun 25, 2013 at 2:18

stinepike

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