Cody

# Problem 636. Spherical radius given four points

Solution 2155527

Submitted on 10 Mar 2020 by Asif Newaz
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### Test Suite

Test Status Code Input and Output
1   Pass
pts=[0 3 2;1 -1 1;2 1 0;5 1 3]; % c(2 1 3) r=3 y_correct = 3; assert(isequal(Sphere_radius(pts),y_correct))

out = 13 3 5 35 b = 0 1 2 5 3 -1 1 1 2 1 0 3 1 1 1 1 a = 4.0000 2.0000 6.0000 -5.0000

2   Pass
pts=[1 0 0;0 1 0;0 0 1;-1 0 0]; % c(0 0 0) r=1 y_correct = 1; assert(isequal(Sphere_radius(pts),y_correct))

out = 1 1 1 1 b = 1 0 0 -1 0 1 0 0 0 0 1 0 1 1 1 1 a = 0 0 0 1

3   Pass
pts=[1 0 -1;0 1 -1;0 0 0;-1 0 -1]; % c(0 0 -1) r=1 y_correct = 1; assert(isequal(Sphere_radius(pts),y_correct))

out = 2 2 0 2 b = 1 0 0 -1 0 1 0 0 -1 -1 0 -1 1 1 1 1 a = 0 0 -2 0

4   Pass
pts=[2 0 -2;0 2 -2;0 0 0;-2 0 -2]; % c(0 0 -2) r=2 y_correct = 2; assert(isequal(Sphere_radius(pts),y_correct))

out = 8 8 0 8 b = 2 0 0 -2 0 2 0 0 -2 -2 0 -2 1 1 1 1 a = 0 0 -4 0

5   Pass
pts=[-5 -1 -3;1 -1 -3;-2 -4 -3;-2 -1 0]; % c(-2 -1 -3) r=3 y_correct = 3; assert(isequal(Sphere_radius(pts),y_correct))

out = 35 11 29 5 b = -5 1 -2 -2 -1 -1 -4 -1 -3 -3 -3 0 1 1 1 1 a = -4.0000 -2.0000 -6.0000 -5.0000