Schaum’s Outline Series OF Principles of Computer Science phần 4 ppsx

... as part of the state of each individual car (part of the state of each instance). On the other hand, we would maintain a count of the total number of Automobiles as part of the state of the class ... expression / | \ / | \ (9 - 4) - 2 expression add_op term CHAP. 4] SOFTWARE 63 The state of an object is provided by variables. As the values of variables change, the state...

Ngày tải lên: 12/08/2014, 21:22

... some day: = 2-,, (b /4! (b+n)! b! (b/2+n)! ’ integer n 3 0. (5.103) For example, when n = 3 this identity says that 4 l-3- +3 4. 5 4. 5.6 2 (4 + b) 4( 4 + b) (5 + b) - 8 (4 + b)(5 + b)(6 + b) (b+3)(b+2)(b+l) = ... 2 ADBC 1 BDAC 0 CDAB 0 DCAB 0 ADCB 2 BDCA 1 CDBA 0 DCBA 0 Therefore h (4, 4) = 1; h (4, 3) = 0; h (4, 2) = 6; h (4, l) = 8; h (4, O) = 9. 5.6 HYPERGEOMETRIC TRANSF...

Ngày tải lên: 14/08/2014, 04:21

... most modern computers. 4 INTRODUCTION TO COMPUTER SCIENCE [CHAP. 1 SCHAUM’S OUTLINE OF Principles of COMPUTER SCIENCE CARL REYNOLDS Department of Computer Science Rochester Institute of Technology PAUL ... Jones (http://www.cs.uiowa.edu/~jones/cards/history.html). SCHAUM’S OUTLINE OF Principles of COMPUTER SCIENCE CHAPTER 1 Introduction to Computer...

Ngày tải lên: 12/08/2014, 21:22

... lists of length one is equal to the logarithm to the base 2 of the number of elements in the list. In the case of our 4- element example, the logarithm to the base 2 of 4 is 2, because 2 2 = 4. This ... but in computer science, because of the ubiquity of binary math, this is usually written as lg n, meaning logarithm to the base 2 of n. The total running time T of the...

Ngày tải lên: 12/08/2014, 21:22

... countOfCars is public, any object can discover the number of automobiles created so 52 SOFTWARE [CHAP. 4 44 CHAPTER 4 Software This chapter will introduce a wide variety of topics related to computer ... is a pattern of ones and zeros stored in a word of computer memory. By the way, a “word” of memory is the basic unit of storage for a computer. A 16-bit computer has...

Ngày tải lên: 12/08/2014, 21:22

... operating system of a computer is a program, often called the “kernel,” which is always running on the computer, and which governs the execution of all the other programs that run on the computer. The ... mapped to the thread model of the OS. The Java programmer is protected from having to know the details of the underlying threading model of the computer. SYNCHRONIZATION Oft...

Ngày tải lên: 12/08/2014, 21:22

... logical page number. Since the number of frames of physical memory is likely to be much smaller than the number of pages of logical memory in a 64- bit computer (with 4K pages, 2 52 = way too many logical ... frames. The size of a frame is some power of 2 (for reasons that will become clear), and systems have implemented frames of sizes from 512 bytes to 64K. A typical size i...

Ngày tải lên: 12/08/2014, 21:22

... relation consists of rows, each of which represents an instance of the entity type, and of columns, each of which represents one of the attributes of the entity type. Each row of a relation is ... row more often than tuple, but a tuple is a row of a table, an instance of a relation, an instance of an entity type. Each tuple consists of the values of the attributes fo...

Ngày tải lên: 12/08/2014, 21:22

... subquery returns any rows ALL True if all of a set of comparisons are true ANY True if any one of a set of comparisons is true SOME True if some of a set of comparisons is ture Table 8-1 Line Item Consignment_Seller Write ... Georgia. Writers of software can protect their work by keeping the code secret. In the early days of computing, customers often received source code to...

Ngày tải lên: 12/08/2014, 21:22

... theirs, and to their peace of mind, regardless of the quality of their locks. Software professionals should never condone the spreading of viruses, Trojan horses, or worms. The ACM Code of Ethics provides ... order of growth of your mean algorithm? setup 4 loop 5 * length (length = n, the count of numbers to be averaged) return 2 Θ( n ) 2 .4 Write pseudo code for finding th...

Ngày tải lên: 12/08/2014, 21:22