Data Structures: A Pseudocode Approach with C
Richard F. Gilberg, Behrouz A. Forouzan
Language: English
Pages: 736
ISBN: 0534390803
Format: PDF / Kindle (mobi) / ePub
This second edition expands upon the solid, practical foundation established in the first edition of the text. A new four-part organizational structure increases the flexibility of the text, and all material is presented in a straightforward manner accompanied by an array of examples and visual diagrams.
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The pointer can be set to the address of the integer value or of the floating-point value. Figure 1-7 shows the situation. void* p; int i; float f; p = &i; ... p = &f; p = &i p = &f p p i p f FIGURE 1-7 Pointers for Program 1-1 Program 1-1 uses a pointer to void that we can use to print either an integer or a floating-point number. Chapter 1 Basic Concepts 19 PROGRAM 1-1 Demonstrate Pointer to void 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 /* Demonstrate pointer to.
Program, the data are stored in dynamic memory. The allocation and storage of the data are the responsibility of the programmer. We show these two steps in statements 17 and 18. The createNode function allocates a node structure in dynamic memory, stores the data void pointer in the node, and then returns the node’s address. In statement 22, we store the void pointer from the node into an integer pointer. Because C is strongly typed, this assignment must be cast to an integer pointer. So, while.
Postfix Post expression has been converted */ void preToPostFix (char* preFixIn, char* postFix) { // Local Definitions char operator [2]; char postFix1[256]; char postFix2[256]; char temp [256]; int lenPreFix; // Statements if (strlen(preFixIn) == 1) { *postFix = *preFixIn; *(postFix + 1) = '\0'; return; } // if only operand *operator = *preFixIn; *(operator + 1) = '\0'; // Find first expression lenPreFix = findExprLen (preFixIn + 1); strncpy (temp, preFixIn + 1, lenPreFix); *(temp + lenPreFix) =.
CreateQueue Enqueue The logic for enqueue, as shown in Algorithm 4-2, is straightforward. If memory is available, it creates a new node, inserts it at the rear of the queue, and returns true. If memory is not available, it returns false. The code is shown in Program 4-3. PROGRAM 4-3 Enqueue 1 2 3 4 5 6 /*================= enqueue ================ This algorithm inserts data into a queue. Pre queue has been created Post data have been inserted Return true if successful, false if overflow */.
End of the loop is indicated by end loop in statement 2. Algorithm Analysis For selected algorithms, we follow the algorithm with an analysis section that explains some of its salient points. Not every line of code is explained. Rather, the analysis examines only those points that either need to be emphasized or that may require some clarification. The algorithm analysis also often introduces style or efficiency considerations. Pseudocode Example As another example of pseudocode, consider the.