Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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My issue:

I don't know how to shift left after swapping arrays.

My code:

import java.util.Scanner;
public class StudentScores {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
final int SCORES_SIZE = 4;
int[] oldScores = new int[SCORES_SIZE];
int[] newScores = new int[SCORES_SIZE];
int i;

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

/* Your solution goes here */for (i=0; i < oldScores.length; i++) {
newScores[i]= oldScores[i];
}


// student code ends here

for (i = 0; i < newScores.length; ++i) {
System.out.print(newScores[i] + " ");
}
System.out.println();
}
}

Transcribed Image Text:CHALLENGE 7.7.2: Copy and modify array elements. ACTIVITY Write a loop that sets newScores to oldScores shifted once left, with element 0 copied to the end. Ex: If oldScores = {10, 20, 30, 40}, then newScores = {20, 30, 40, 10}. Note: These activities may test code with different test values. This activity will perform two tests, both with a 4-element array (int oldScores[4]). See "How to Use zyBooks". Also note: If the submitted code tries to access an invalid array element, such as newScores[9] for a 4-element array, the test may generate strange results. Or the test may crash and report "Program end never reached", in which case the system doesn't print the test case that caused the reported message.
Transcribed Image Text:X Testing with inputs: 10 20 30 40 Output differs. See highlights below. Your output 10 20 30 40 Expected output 20 30 40 10 X Testing with inputs: 199 9990 Output differs. See highlights below. Special character legend Your output 199 99 9 Expected output 99 9 0 199
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