Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 3.64HW
Consider the following source code, where R, S, and T are constants declared with #define:
In compiling this program, GCC generates the following assembly code.
A. Extend Equation 3.1 from two dimensions to three to provide a formula for the location of array element A [i] [j] [k].
B. Use your reverse engineering skills to determine the values of R, S, and T based on the assembly code.
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3D Array: Use python to solve this problem.
We already know how to operate 2D arrays. Now we have to use 3D arrays in order to construct LCS with 3 parameters. Multidimensional array means multiple arrays of different dimensions or sizes can be held by a single array. We will learn about 3D arrays with an example.
Suppose we want to store midterm and final marks separately of four different courses of three students in a single array. We can easily do it by using a 3D array.
Python:
for i in range(len(A)):
print("Student: ",(i+1))
for j in range(len(A[i])):
print("Course: ",(j+1))
print("Marks of Mid and Final: ")
for k in range(len(A[i][j])):
print(A[i][j][k],end=" ")
print()
print()
OUTPUT:
Student: 1
Course: 1
Marks of Mid and Final:
30 25
Course: 2
Marks of Mid and Final:
35 40
Course: 3
Marks of Mid and Final:
41 45
Course: 4
Marks of Mid and Final:
26 26
Student: 2
Course: 1
Marks of Mid and Final:
41 45…
Develop python program of function random array(m, n) that takes two integers as an argument and returns a 2D m-by-n array with random elements in it.
Develop python program of function adder(a1, a2) that reads two 2D arrays of the same size and returns an array that summarizes a1 and a2. To add the two arrays, you need to add their elements correspondingly.
Develop a python program of function inverse ray(a) that takes a 2D-array as an argument and inverses the array. You will need to inverse the rows first and then inverse the columns next. For instance, if the array = [[2, 3, 4], [5, 6, 7]], the inverse will be = [[7, 6, 5], [4, 3, 2]]
Please translate this C++ code in MIPS assembly language
Translate the following C++ program into MIPS assembly language. Note that the array initializations have been provided. Make sure your loops are efficient (i.e., they should not have unnecessary branches). Allocate i to $s0, j to $s1, sum to $s2. You may use any other MIPS registers.
int x[] = {9, -1, 2, 13, 79, 4, -87, 3};
int main() {
int j = 0;
int sum = 0;
for (int i=0; i<8; i++) {
if (x[i] < 0) {
sum = sum + x[i];
j--;
}
x[j] = sum; j++;
}
}
Chapter 3 Solutions
Computer Systems: A Programmer's Perspective (3rd Edition)
Ch. 3.4 - Prob. 3.1PPCh. 3.4 - Prob. 3.2PPCh. 3.4 - Prob. 3.3PPCh. 3.4 - Prob. 3.4PPCh. 3.4 - Prob. 3.5PPCh. 3.5 - Prob. 3.6PPCh. 3.5 - Prob. 3.7PPCh. 3.5 - Prob. 3.8PPCh. 3.5 - Prob. 3.9PPCh. 3.5 - Prob. 3.10PP
Ch. 3.5 - Prob. 3.11PPCh. 3.5 - Prob. 3.12PPCh. 3.6 - Prob. 3.13PPCh. 3.6 - Prob. 3.14PPCh. 3.6 - Prob. 3.15PPCh. 3.6 - Prob. 3.16PPCh. 3.6 - Practice Problem 3.17 (solution page 331) An...Ch. 3.6 - Practice Problem 3.18 (solution page 332) Starting...Ch. 3.6 - Prob. 3.19PPCh. 3.6 - Prob. 3.20PPCh. 3.6 - Prob. 3.21PPCh. 3.6 - Prob. 3.22PPCh. 3.6 - Prob. 3.23PPCh. 3.6 - Practice Problem 3.24 (solution page 335) For C...Ch. 3.6 - Prob. 3.25PPCh. 3.6 - Prob. 3.26PPCh. 3.6 - Practice Problem 3.27 (solution page 336) Write...Ch. 3.6 - Prob. 3.28PPCh. 3.6 - Prob. 3.29PPCh. 3.6 - Practice Problem 3.30 (solution page 338) In the C...Ch. 3.6 - Prob. 3.31PPCh. 3.7 - Prob. 3.32PPCh. 3.7 - Prob. 3.33PPCh. 3.7 - Prob. 3.34PPCh. 3.7 - Prob. 3.35PPCh. 3.8 - Prob. 3.36PPCh. 3.8 - Prob. 3.37PPCh. 3.8 - Prob. 3.38PPCh. 3.8 - Prob. 3.39PPCh. 3.8 - Prob. 3.40PPCh. 3.9 - Prob. 3.41PPCh. 3.9 - Prob. 3.42PPCh. 3.9 - Practice Problem 3.43 (solution page 344) Suppose...Ch. 3.9 - Prob. 3.44PPCh. 3.9 - Prob. 3.45PPCh. 3.10 - Prob. 3.46PPCh. 3.10 - Prob. 3.47PPCh. 3.10 - Prob. 3.48PPCh. 3.10 - Prob. 3.49PPCh. 3.11 - Practice Problem 3.50 (solution page 347) For the...Ch. 3.11 - Prob. 3.51PPCh. 3.11 - Prob. 3.52PPCh. 3.11 - Practice Problem 3.52 (solution page 348) For the...Ch. 3.11 - Practice Problem 3.54 (solution page 349) Function...Ch. 3.11 - Prob. 3.55PPCh. 3.11 - Prob. 3.56PPCh. 3.11 - Practice Problem 3.57 (solution page 350) Function...Ch. 3 - For a function with prototype long decoda2(long x,...Ch. 3 - The following code computes the 128-bit product of...Ch. 3 - Prob. 3.60HWCh. 3 - In Section 3.6.6, we examined the following code...Ch. 3 - The code that follows shows an example of...Ch. 3 - This problem will give you a chance to reverb...Ch. 3 - Consider the following source code, where R, S,...Ch. 3 - The following code transposes the elements of an M...Ch. 3 - Prob. 3.66HWCh. 3 - For this exercise, we will examine the code...Ch. 3 - Prob. 3.68HWCh. 3 - Prob. 3.69HWCh. 3 - Consider the following union declaration: This...Ch. 3 - Prob. 3.71HWCh. 3 - Prob. 3.72HWCh. 3 - Prob. 3.73HWCh. 3 - Prob. 3.74HWCh. 3 - Prob. 3.75HW
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