478. Generate Random Point in a Circle
Description
Given the radius and the position of the center of a circle, implement the function randPoint
which generates a uniform random point inside the circle.
Implement the Solution
class:
Solution(double radius, double x_center, double y_center)
initializes the object with the radius of the circleradius
and the position of the center(x_center, y_center)
.randPoint()
returns a random point inside the circle. A point on the circumference of the circle is considered to be in the circle. The answer is returned as an array[x, y]
.
Example 1:
Input ["Solution", "randPoint", "randPoint", "randPoint"] [[1.0, 0.0, 0.0], [], [], []] Output [null, [-0.02493, -0.38077], [0.82314, 0.38945], [0.36572, 0.17248]] Explanation Solution solution = new Solution(1.0, 0.0, 0.0); solution.randPoint(); // return [-0.02493, -0.38077] solution.randPoint(); // return [0.82314, 0.38945] solution.randPoint(); // return [0.36572, 0.17248]
Constraints:
0 < radius <= 108
-107 <= x_center, y_center <= 107
- At most
3 * 104
calls will be made torandPoint
.
Solutions
Solution 1
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