iterating through array, android dev

Question

I have a question I have been holding off for about a week, because I thought I can figure it out but I can't!! lol.

Well, I have created an int array just as the following.

int[] a = new int[11];
    a[0] = 15;
    a[1] = 16
    a[2] = 17;
    a[3] = 18;
    a[4] = 19;
    a[5] = 20;
    a[6] = 21;
    a[7] = 22;
    a[8] = 23;
    a[9] = 24;
    a[10] = 25;

what I want is to get user to input a value from 1 thru 10. I want to be able to match their input with the index of the array, then finally return the value. So, if the user inputs 7, then 22 will be returned, or if user input is 4, then 19 is returned.

If the user inputs a number between 1 and 10, Why does your array have 11 elements? — JB Nizet
– JB Nizet, Commented Feb 23, 2012 at 10:20
well the list is much longer I would like to know how to increment through the array till I find the matching index and return the value. — JMSDEV
– JMSDEV, Commented Feb 23, 2012 at 10:21

JOG · Accepted Answer · 2012-02-23 10:18:40Z

2

if user input is int input, you obtain the value with a[input]

Is this the answer to your question? Or do you wonder where to get the input from? In that case, please rephrase your question.

answered Feb 23, 2012 at 10:18

JOG

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Comments

waqaslam · Accepted Answer · 2012-02-23 10:21:56Z

1

write it as a method for more convenience:

public int checkArray(int val){
    int[] a = new int[11];
    a[0] = 15;
    a[1] = 16;
    a[2] = 17;
    a[3] = 18;
    a[4] = 19;
    a[5] = 20;
    a[6] = 21;
    a[7] = 22;
    a[8] = 23;
    a[9] = 24;
    a[10] = 25;

    return a[val];
}

answered Feb 23, 2012 at 10:21

waqaslam

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Comments

chinna_82 · Accepted Answer · 2012-02-23 10:22:29Z

1

you can use for loop...

for(int i = 0;i=userinput;i++)
{
    System.out.println(a[i]);
}

answered Feb 23, 2012 at 10:22

chinna_82

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Comments

amit · Accepted Answer · 2012-02-23 10:19:02Z

0

This requires no iteration.

You need to create a Scanner and just return a[scanner.nextInt()]; [where scanner is the initialized Scanner].

Note the above is not safe, it might invoke IndexOutOfBoundException if the user will insert 100 for example.

answered Feb 23, 2012 at 10:19

amit

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