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Imagine Circle Country as an infinite plane. You are given int[] x and int[] y and int[] r, where (x[i],y[i]) are the coordinates of the i-th district's center and r[i] is its radius. Zara is currently at point (x1,y1) and she needs to get to point (x2,y2). Neither of these points lies on a district border. Return the minimal number of district borders she must cross to get to her destination. Constraints x will contain between 1 and 50 elements, inclusive. x, y and r will each contain the same number of elements. Each element of x and y will be between -1000 and 1000, inclusive. Each element of r will be between 1 and 1000, inclusive. x1, y1, x2 and y2 will be between -1000 and 1000, inclusive. No two circumferences will have common points. The points (x1,y1) and (x2,y2) will not lie on any of the circumferences.

Imagine Circle Country as an infinite plane. You are given int[] x and int[] y and int[] r, where (x[i],y[i]) are the coordinates of the i-th district's center and r[i] is its radius. Zara is currently at point (x1,y1) and she needs to get to point (x2,y2). Neither of these points lies on a district border. Return the minimal number of district borders she must cross to get to her destination. Constraints x will contain between 1 and 50 elements, inclusive. x, y and r will each contain the same number of elements. Each element of x and y will be between -1000 and 1000, inclusive. Each element of r will be between 1 and 1000, inclusive. x1, y1, x2 and y2 will be between -1000 and 1000, inclusive. No two circumferences will have common points. The points (x1,y1) and (x2,y2) will not lie on any of the circumferences.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Imagine Circle Country as an infinite plane. You are given int[] x and int[] y and int[] r, where (x[i],y[i]) are the coordinates of the i-th district's center and r[i] is its radius. Zara is currently at point (x1,y1) and she needs to get to point (x2,y2). Neither of these points lies on a district border. Return the minimal number of district borders she must cross to get to her destination.

Constraints

  • x will contain between 1 and 50 elements, inclusive.
  • x, y and r will each contain the same number of elements.
  • Each element of x and y will be between -1000 and 1000, inclusive.
  • Each element of r will be between 1 and 1000, inclusive.
  • x1, y1, x2 and y2 will be between -1000 and 1000, inclusive.
  • No two circumferences will have common points.
  • The points (x1,y1) and (x2,y2) will not lie on any of the circumferences.
3. {1, -3,2,5, -4,12,12} {1,-1,2,5,5, 1,1} {8,1,2,1,1,1,2} -5 1 12 1 Returns: 3 منظم O
Transcribed Image Text:3. {1, -3,2,5, -4,12,12} {1,-1,2,5,5, 1,1} {8,1,2,1,1,1,2} -5 1 12 1 Returns: 3 منظم O
Examples 1. 2. {0} {0} {2} -5 1 Returns: 0 {0, -6,6} {0,1,2} {2,2,2} -5 1 TST 1 Returns: 2 o
Transcribed Image Text:Examples 1. 2. {0} {0} {2} -5 1 Returns: 0 {0, -6,6} {0,1,2} {2,2,2} -5 1 TST 1 Returns: 2 o
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45 00 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 public class CircleCountry { // Returns true if point (x,y) is inside circle determined by cx, cy, and r // and returns false otherwise public boolean isInside(int x, int y, int cx, int cy, int r) { // return the result of testing whether the square of the distance // from (cx, cy) to (x,y) is less than the square of the radius // fill this in } public int least Borders (int[] x, int[] y, int[] r, int x1, int y1, int x2, int y2) { int crosses = 0; // loop through all circles for (int k=0; k < x.length; k+= 1) { (x2,y2) is inside circle k // if exactly one of (x1, y1) and // (specified by x[k], y[k], and r[k]), then increment crosses // fill this in } } return crosses;
Transcribed Image Text:45 00 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 public class CircleCountry { // Returns true if point (x,y) is inside circle determined by cx, cy, and r // and returns false otherwise public boolean isInside(int x, int y, int cx, int cy, int r) { // return the result of testing whether the square of the distance // from (cx, cy) to (x,y) is less than the square of the radius // fill this in } public int least Borders (int[] x, int[] y, int[] r, int x1, int y1, int x2, int y2) { int crosses = 0; // loop through all circles for (int k=0; k < x.length; k+= 1) { (x2,y2) is inside circle k // if exactly one of (x1, y1) and // (specified by x[k], y[k], and r[k]), then increment crosses // fill this in } } return crosses;
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