Concepts Of Programming Languages
12th Edition
ISBN: 9780134997186
Author: Sebesta, Robert W.
Publisher: Pearson,
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Chapter 5, Problem 2PE
Program Plan Intro
Static scoping:
This means that the scope of a variable can be determined prior to the execution. So that, compiler can determines the type of every variable in the source code. It provides a method of non-local access of a variable.
Example: ALGOL, Ada, C, and Pascal are statically scoped.
Dynamic scoping:
This means that the scope of a variable is dynamic. That is, it refers to change. The call stack can be different from every time a current function is called, and so the function might have different variables depending on where it is called from.
Example: Common LISP supports dynamic scoping.
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2. Consider the following pseudocode for partition:
function partition (A,L,R)
pivotkey = A [R]
t = L
for i
L to R-1 inclusive:
if A[i] A[i]
t = t + 1
end if
end for
A [t] A[R]
return t
end function
Suppose we call partition (A,0,5) on A=[10,1,9,2,8,5]. Show the state of the list at the
indicated instances.
Initial A
After i=0 ends
After 1 ends
After i 2 ends
After i = 3 ends
After i = 4 ends
After final swap
10 19 285
[12 pts]
.NET Interactive
Solving Sudoku using Grover's Algorithm
We will now solve a simple problem using Grover's algorithm, for which we do not necessarily know the solution beforehand. Our problem is a 2x2 binary sudoku, which in our case has two simple rules:
•No column may contain the same value twice
•No row may contain the same value twice
If we assign each square in our sudoku to a variable like so:
1
V V₁
V3
V2
we want our circuit to output a solution to this sudoku.
Note that, while this approach of using Grover's algorithm to solve this problem is not practical (you can probably find the solution in your head!), the purpose of this example is to demonstrate the
conversion of classical decision problems into oracles for Grover's algorithm.
Turning the Problem into a Circuit
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using r language
Chapter 5 Solutions
Concepts Of Programming Languages
Ch. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - Prob. 3RQCh. 5 - Which category of C++ reference variables always...Ch. 5 - Prob. 5RQCh. 5 - Prob. 6RQCh. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - What are the advantages and disadvantages of...Ch. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - How is a reference to a nonlocal variable in a...Ch. 5 - What is the general problem with static scoping?Ch. 5 - What is the referencing environment of a...Ch. 5 - Prob. 16RQCh. 5 - What is a block?Ch. 5 - What is the purpose of the let constructs in...Ch. 5 - What is the difference between the names defined...Ch. 5 - Prob. 20RQCh. 5 - Prob. 21RQCh. 5 - What are the advantages of named constants?Ch. 5 - Which of the following identifier forms is most...Ch. 5 - Prob. 2PSCh. 5 - Write a simple assignment statement with one...Ch. 5 - Prob. 4PSCh. 5 - Describe a situation when a history-sensitive...Ch. 5 - Consider the following C program void fun (void) {...Ch. 5 - Consider the following skeletal C program: void...Ch. 5 - Which of the following identifier forms is most...Ch. 5 - Prob. 2PECh. 5 - Write a simple assignment statement with one...
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