Input Number to Array java

Question

I'm doing a Java activity that prints the Numbers the user Input, and here's my codes:

System.out.print("Enter How Many Inputs: ");
int num1 = Integer.parseInt(in.readLine());
for (int x = 1; x<=num1;x++){
    for (int i = 0 ; i<num1;){
        System.out.print("Enter Value #" + x++ +":");
        int ctr1 =Integer.parseInt(in.readLine());
        i++;
    }
}

How can I print all the input numbers? Here's the result of my code:

Enter How Many Inputs: 5
Enter Value #1:22
Enter Value #2:1
Enter Value #3:3
Enter Value #4:5
Enter Value #5:6

How can I print all this numbers as array. 22,1,3,5,6

You should probably use Scanner rather than BufferedReader, since it exposes nextInt. Anyways, there's plenty of ways to do this... do you actually want to build an array of the values? — obataku
– obataku, Commented Sep 29, 2012 at 15:44

PermGenError · Accepted Answer · 2012-09-29 15:55:04Z

1

Create an int[] array of length num. On every iteration take the user input and put it in the array at their specified index and break out of the while loop. and at last print the array elements by iterating over it.

    Scanner scan = new Scanner(System.in);
        System.out.println("enter num of values: ");
        int [] arr = new int[scan.nextInt()];
        for(int i=0;i<arr.length; i++) {
            scan = new Scanner(System.in);
            System.out.println("please enter a value: ");
            while(scan.hasNextInt()){
            int x = scan.nextInt()
                    ;
            arr[i]= x;
            break;
            }

        }
        for(int i:arr){
            System.out.print(i);
        }

OUTPUT: enter num of values: 5 please enter a value: 22 please enter a value: 2 please enter a value: 3 please enter a value: 5 please enter a value: 6 22 2 3 5 6

edited Sep 29, 2012 at 15:55

answered Sep 29, 2012 at 15:44

PermGenError

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Comments

arjayosma · Accepted Answer · 2012-09-29 16:17:52Z

0

System.out.print("Enter How Many Inputs: ");
int num1 = Integer.parseInt(in.readLine());
int arr[] = new int[num1];

for (int i = 0; i<num1; i++)
{
    System.out.print("Enter Value #" + (i + 1) + ":");
    arr[i] =Integer.parseInt(in.readLine());
}

I guess this should do it... NOT TESTED

PRINTING

for(int i = 0; i < arr.length; i++)
    System.out.println(arr[i]);

SORTING

import java.util.Arrays;

Inside the code block

Arrays.sort(arr);

edited Sep 29, 2012 at 16:17

answered Sep 29, 2012 at 15:46

arjayosma

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5 Comments

xyvyre Over a year ago

sorry still confuse how can i print all entered Numbers? thanks

xyvyre Over a year ago

Sir last question how can i display the entered numbers in ascending order.? thanks !

arjayosma Over a year ago

import java.util.Arrays; Then you can use Arrays.sort(arr); @WewDiocampo

xyvyre Over a year ago

gotcha , now i dont have any idea in descending order : (

arjayosma Over a year ago

@WewDiocampo It's your time now to do some research :)

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