21. Consider the following method: public static void sketch(int x1, int y1, int x2, int y2, int n) ( if (n <= 0) (C) else ( (E) drawLine(x1, y1, x2, y2); } Assume that the screen looks like a Cartesian coordinate system with the origin at the center, and that drawLine connects (x1,y1) to (x2,y2). Assume also that x1, y1, x2, and y2 are never too large or too small to cause errors. Which picture best represents the sketch drawn by the method call int xm int ym (x1+x2+ y1 - y2) / 2; (y1+ y2 + x2-x1) / 2; sketch(x1, y1, xm, ym, n - 1); sketch(xm, ym, x2, y2, n - 1); sketch(a, 0, -a, 0, 2) where a is a positive integer? (A) -a a (B) (D) -a y

21. Consider the following method: public static void sketch(int x1, int y1, int x2, int y2, int n) ( if (n <= 0) (C) else ( (E) drawLine(x1, y1, x2, y2); } Assume that the screen looks like a Cartesian coordinate system with the origin at the center, and that drawLine connects (x1,y1) to (x2,y2). Assume also that x1, y1, x2, and y2 are never too large or too small to cause errors. Which picture best represents the sketch drawn by the method call int xm int ym (x1+x2+ y1 - y2) / 2; (y1+ y2 + x2-x1) / 2; sketch(x1, y1, xm, ym, n - 1); sketch(xm, ym, x2, y2, n - 1); sketch(a, 0, -a, 0, 2) where a is a positive integer? (A) -a a (B) (D) -a y

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter9: Advanced Modularization Techniques

Section: Chapter Questions

Problem 13RQ

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