3. The following code creates a 2D array of integers, and the nested for loops populate the array so that it is a multiplication table. In the last line of code, what should the array indices be in order to print out the correct answer (i.e., what replaces the question marks)? int my2DIntArray = new int [10] [10]; A. 2 and 4 for (int i = 1; i <= 10; i++) { for (int j = 1; j <= 10; j++) { my2DIntArray[i-1][j-1] = i*j; B. 3 and 5 System.out.print(my2DIntArray[i-1] [j-1] + ", "); C. 4 and 2 D. 1 and 3 System.out.println(); } E. 3 and 1 System.out.println("2 times 4 is " + my2DIntArray[?] [?]);
3. The following code creates a 2D array of integers, and the nested for loops populate the array so that it is a multiplication table. In the last line of code, what should the array indices be in order to print out the correct answer (i.e., what replaces the question marks)? int my2DIntArray = new int [10] [10]; A. 2 and 4 for (int i = 1; i <= 10; i++) { for (int j = 1; j <= 10; j++) { my2DIntArray[i-1][j-1] = i*j; B. 3 and 5 System.out.print(my2DIntArray[i-1] [j-1] + ", "); C. 4 and 2 D. 1 and 3 System.out.println(); } E. 3 and 1 System.out.println("2 times 4 is " + my2DIntArray[?] [?]);
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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![**Question 3:**
The following code creates a 2D array of integers, and the nested for loops populate the array so that it is a multiplication table. In the last line of code, what should the array indices be in order to print out the correct answer (i.e., what replaces the question marks)?
```java
int[][] my2DIntArray = new int[10][10];
for (int i = 1; i <= 10; i++) {
for (int j = 1; j <= 10; j++) {
my2DIntArray[i-1][j-1] = i * j;
System.out.print(my2DIntArray[i-1][j-1] + ", ");
}
System.out.println();
}
System.out.println("2 times 4 is " + my2DIntArray[?][?]);
```
What replaces the question marks?
**Options:**
A. 2 and 4 <br>
B. 3 and 5 <br>
C. 4 and 2 <br>
D. 1 and 3 <br>
E. 3 and 1 <br>
In the nested for loops, the actual value of the 2D array elements is calculated and stored using the formula `i * j`. Therefore, the correct indices to access `2 times 4` will be at `i = 2` and `j = 4`, but since arrays are zero-indexed, the actual indices to access `2 times 4` should be `(1, 3)`.
Thus, the correct answer:
**D. 1 and 3**](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6cf78908-a1f9-4330-9ece-f4021df10613%2F367a2f4a-272e-47d4-8c22-5daf073c0329%2Fg3kkiw_processed.png&w=3840&q=75)
Transcribed Image Text:**Question 3:**
The following code creates a 2D array of integers, and the nested for loops populate the array so that it is a multiplication table. In the last line of code, what should the array indices be in order to print out the correct answer (i.e., what replaces the question marks)?
```java
int[][] my2DIntArray = new int[10][10];
for (int i = 1; i <= 10; i++) {
for (int j = 1; j <= 10; j++) {
my2DIntArray[i-1][j-1] = i * j;
System.out.print(my2DIntArray[i-1][j-1] + ", ");
}
System.out.println();
}
System.out.println("2 times 4 is " + my2DIntArray[?][?]);
```
What replaces the question marks?
**Options:**
A. 2 and 4 <br>
B. 3 and 5 <br>
C. 4 and 2 <br>
D. 1 and 3 <br>
E. 3 and 1 <br>
In the nested for loops, the actual value of the 2D array elements is calculated and stored using the formula `i * j`. Therefore, the correct indices to access `2 times 4` will be at `i = 2` and `j = 4`, but since arrays are zero-indexed, the actual indices to access `2 times 4` should be `(1, 3)`.
Thus, the correct answer:
**D. 1 and 3**
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