Java - losing first user input using a while loop

Question

Good morning all,

I am currently learning coding / Java. The task I need to do is; make a program that takes user input and returns the highest and lowest entry. I have to use a while loop to keep it simple. At the moment I got this:

    System.out.println("Enter numbers, Q to finish: ");
    int largest = sc.nextInt();
    int smallest = sc.nextInt();

    while (sc.hasNextInt()) {
        int number = sc.nextInt();

        if(number > largest) {
            largest = number;
        }
        else if(number < smallest){
            smallest = number;
        }
    }
    System.out.printf("Largest: %d  Smallest: %d", largest, smallest);

The problem is that it skips the first user entry. After some testing I saw that when I only enter 1 number and press Q I get a error. If I enter; 10 - 20 - 30, the return is; Largest: 30 Smallest: 20.

Anyone has a idea why it skips the first user entry?

Ayush Gupta · Accepted Answer · 2018-02-16 13:16:00Z

2

Replace these 2 lines:

int largest = sc.nextInt();
int smallest = sc.nextInt();

with

int largest = sc.nextInt();
int smallest = largest;

answered Feb 16, 2018 at 13:16

Ayush Gupta

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3 Comments

MrEmper Over a year ago

Works like a charm, thanks a lot for the very quick and easy solution!

MrEmper Over a year ago

How can I do that?

Ayush Gupta Over a year ago

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