Implement doubly linked lists by storing the sum of the next and prev pointers in a single
Question:
Implement doubly linked lists by storing the sum of the next and prev pointers in a single pointer variable as described in Example 4.1.
Transcribed Image Text:
Example 4.1 There is a space-saving technique that can be employed to eliminate the additional space requirement, though it will complicate the implementation and be somewhat slower. Thus, the technique is an example of a space/time tradeoff. It is based on observing that, if we store the sum of two values, then we can get either value back by subtracting the other. That is, if we store a + b in variable c, then b = ca and a = c - b. Of course, to recover one of the values out of the stored summation, the other value must be supplied. A pointer to the first node in the list, along with the value of one of its two link fields, will allow access to all of the remaining nodes of the list in order. This is because the pointer to the node must be the same as the value of the following node's prev pointer, as well as the previous node's next pointer. It is possible to move down the list breaking apart the summed link fields as though you were opening a zipper. Details for implementing this variation are left as an exercise. The principle behind this technique is worth remembering, because it has many applications. The following code fragment will swap the contents of two variables without using a temporary variable (at the cost of three arithmetic operations). a = a + b; b = = a a = a - - b; // Now b contains original value of a b; // Now a contains original value of b
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 100% (QA)
The technique described here is a classic example of a spacetime tradeoff Its based on the observati...View the full answer
Answered By
S Mwaura
A quality-driven writer with special technical skills and vast experience in various disciplines. A plagiarism-free paper and impeccable quality content are what I deliver. Timely delivery and originality are guaranteed. Kindly allow me to do any work for you and I guarantee you an A-worthy paper.
4.80+
27+ Reviews
73+ Question Solved
Related Book For
Practical Introduction To Data Structures And Algorithm Analysis Java Edition
ISBN: 9780136609117
1st Edition
Authors: Clifford A. Shaffer
Question Posted:
Students also viewed these Computer science questions
-
When using the list class of Example 10.17, the typical C++ programmer will use a pointer type for generic parameter V, so that list_nodes point to the elements of the list. An alternative...
-
Explain how to implement doubly linked lists using only one pointer value x.np per item instead of the usual two (next and prev). Assume that all pointer values can be interpreted as k-bit integers,...
-
Determine whether the underlined number describes a population parameter or a sample statistic. Explain your reasoning. Sixty - five of the 93 passengers aboard an airship survived an explosion....
-
Discuss the various ways project change can be managed. In your discussion, be sure to include real world examples if you have experienced them those experiences may help your project
-
A small pump is driven by a 2 kW motor with liquid water at 150 kPa, 10C entering. Find the maximum water flow rate you can get with an exit pressure of 1 MPa and negligible kinetic energies....
-
Design a problem, using Fig. 2.92 , to help other students better understand series and parallel circuits. Find v 1 , v 2 , and v 3 in the circuit in Fig. 2.92. + v1 - R3 v3 R2 v2
-
Refer to Googles financial statements in Appendix A to compute its equity ratio as of December 31, 2015, and December 31, 2014. Data From Google Financial Statement Appendix A Google Inc....
-
(Computation of Actual Return, Gains and Losses, Corridor Test, and Pension Expense) Erickson Company sponsors a defined benefit pension plan. The corporation's actuary provides the following...
-
By how much does the fluid level rise in the side of the manometer that is open to the atmosphere? By how much does the fluid level rise in the side of the manometer that is open to the atmosphere if...
-
Implement a city database using unordered lists. Each database record contains the name of the city (a string of arbitrary length) and the coordinates of the city expressed as integer x and y...
-
Use singly linked lists to implement integers of unlimited size. Each node of the list should store one digit of the integer. You should implement addition, subtraction, multiplication, and...
-
Describe procedures for preparing each of the following compounds, using ethanol as the source of all their carbon atoms. Once you prepare a compound, you need not repeat its synthesis in a...
-
What is the theoretical and practical implications for a study on the factors influencing the customers decisions to use online food delivery services after the Covid-19 pandemic in Malaysia....
-
Your company has determined that the time is right to expand globally. As a corporate manager within the organization, you have been assigned to identify and select a team of five to ten members from...
-
What are the political, economic, sociological, technological, legal and environmental elements that impact the global hotel industry in spain? please identify elements, factors and impacts for each...
-
1) Explain in detail the crystallization of a pure metal of your selection. Your explanation should include Mechanism Cooling curve Kinetics 2) Compare the selected pure metal in (1) with one of its...
-
Discusses the following organizational concepts: Organizational mission: the organization's mission and purpose, stated in terms of benefits to customers, employees, and society Organizational...
-
The dean of the Midstate University Business School is trying to understand the costs of the schools two degree programs: Bachelors (BBA) and Masters (MBA). She has asked you for recommendations on...
-
Suppose that a flow network G = (V, E) violates the assumption that the network contains a path s t for all vertices V. Let u be a vertex for which there is no path s u t. Show that there must...
-
Which of the three analog-to-analog conversion techniques (AM, FM, or PM) is the most susceptible to noise? Defend your answer.
-
A corporation has a medium with a 1-MHz bandwidth (lowpass). The corporation needs to create 10 separate independent channels each capable of sending at least 10 Mbps. The company has decided to use...
-
Which characteristics of an analog signal are changed to represent the lowpass analog signal in each of the following analog-to-analog conversions? a. AM b. FM c. PM
-
Let St be the value corresponding to some parameter t. For i j k and given values. Si the interpolated value at j by Inter[j, (i, s), (k, sk)]. Let 0 a y M. and Sk denote Suppose so and SM are known....
-
A city hotel is looking to optimize its revenue by allocating rooms among three different customer segments: Business travelers, Tourists, and Event attendees. The hotel has 150 rooms available....
-
A manufacturer of battery for cellular phone can produce the battery at a cost of $ 3 0 per unit. Fixed cost of this manufacturer is $ 2 5 0 , 0 0 0 per year and he can sell this product of $ 5 0 per...
Study smarter with the SolutionInn App