Consider the following code segment that includes a method called multiply. The multiply method is a sample method for the multiplicat of an n by m array and an m by p array. Suppose the multiply method invoked as shown after replacing the element indicated as x by a numl What number should replace x so that the b3[0][0] = 9 after the execu of b3 = multiply(b1,b2)? Note that the initializeArray method puts a O to every cell of the arra passed to initializeArray. *

Consider the following code segment that includes a method called multiply. The multiply method is a sample method for the multiplicat of an n by m array and an m by p array. Suppose the multiply method invoked as shown after replacing the element indicated as x by a numl What number should replace x so that the b3[0][0] = 9 after the execu of b3 = multiply(b1,b2)? Note that the initializeArray method puts a O to every cell of the arra passed to initializeArray. *

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

Consider the following code segment that includes a method called
multiply. The multiply method is a sample method for the multiplication
of an n by m array and an m by p array. Suppose the multiply method is
invoked as shown after replacing the element indicated as x by a number.
What number should replace x so that the b3[0][0] = 9 after the execution
of b3 = multiply(b1,b2)?
Note that the initializeArray method puts a O to every cell of the array
passed to initializeArray. *

int[][] b1 = {{3,3}};
int[][] b2 = {{x},
{1}};
int[][] b3 = new int[b1.length][b2[@].1ength];
b3 = multiply(b1,b2);
// more statements here
public static int[][] multiply(int[][] a1, int[][] a2) {
int[][] product = new int[al.length][a2[0].1ength];
int element = 0;
int r, c;
initializeArray(product);
for (r = 0; r < product.length; r++) {
for (c = 0; c < product[r].length; c++) {
for (int x = 0; x < al[r].length; x++) {
product[r][c] += al[r][x] * a2[x][c];
}
return product;

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