Printing array elements

[Chad Lemay]

Write three statements to print the first three elements of array runTimes. Follow each statement with a newline. Ex: If runTime = {800, 775, 790, 805, 808}, print:
800
775
790

import java.util.Scanner;

public class PrintRunTimes {
  public static void main (String [] args) {
     Scanner scnr = new Scanner(System.in);
     final int NUM_ELEMENTS = 5;
     int [] runTimes = new int[NUM_ELEMENTS];
     int i;

     for (i = 0; i < runTimes.length; ++i) {
        runTimes[i] = scnr.nextInt();
     }

     /* Your solution goes here  */
     // Populate array
     runTimes[0] = 800;
     runTimes[1] = 775;
     runTimes[2] = 790;
     runTimes[3] = 805;
     runTimes[4] = 808;
     
     for ( i = 0 ; i < 3; i++){
        System.out.println(runTimes[i]);}

  }
}

Testing with inputs: 800 775 790 805 808
Your output
800
775
790

Testing with inputs: 10 25 -10 20 -15
Output differs. See highlights below.
Your output
800
775
790

Expected output
10
25
-10

[Norm Radder]

What do the 4 lines at the end mean?  Is that the problem?  Where do those 3 numbers come from?

Please be sure to wrap all posted code in code tags: Select the code and press the Code button.

[Carey Brown]

You've hard coded the values of the array, how would you ever get an output other than what you are getting?

[Campbell Ritchie]

This is what your code would have looked like with code tags. I shall lef you wokr out what the formatting error in line 23 is.

import java.util.Scanner;

public class PrintRunTimes {
   public static void main (String [] args) {
      Scanner scnr = new Scanner(System.in);
      final int NUM_ELEMENTS = 5;
      int [] runTimes = new int[NUM_ELEMENTS];
      int i;

      for (i = 0; i < runTimes.length; ++i) {
         runTimes[i] = scnr.nextInt();
      }

      /* Your solution goes here  */
      // Populate array
      runTimes[0] = 800;
      runTimes[1] = 775;
      runTimes[2] = 790;
      runTimes[3] = 805;
      runTimes[4] = 808;
      
      for ( i = 0 ; i < 3; i++){
         System.out.println(runTimes[i]);}

   }
}

Apart from the fact that you are populating your array twice and the first time is pointless, I think an array initialiser is a far easier and less error‑prone to populate a new array:-int [] runTimes = {800, 775, 790, 805, 808};

[Norm Radder]

Testing with inputs: 10 25 -10 20 -15

Looks like the program is being run in a tester that provides the input to be put in the array.  The code should Not be putting its own values in the array.

[Carey Brown]

Line 11 is getting the values from the tester, but then you overwrite those values on lines 16-20.