Cody

Problem 194. Clockwise or Counterclockwise

Solution 117788

Submitted on 23 Jul 2012 by Jean-Marie Sainthillier
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Test Suite

Test Status Code Input and Output
1   Pass
x = [-1,-1,1,1]; y = [-1,1,1,-1]; d_correct = true; assert(isequal(isSortedClockwise(x,y),d_correct))
2   Pass
x = [-1,-1,-2,-2]; y = [-1,1,1,-1]; d_correct = false; assert(isequal(isSortedClockwise(x,y),d_correct))
3   Pass
x = [-1,-1,-2,-2]; y = [-1,1,1,-1]; d_correct = false; assert(isequal(isSortedClockwise(x,y),d_correct))
4   Pass
x = [-6,-7,-2,1,1,-2]; y = [4,-7,-13,-11,0,5]; d_correct = false; assert(isequal(isSortedClockwise(x,y),d_correct))
5   Pass
x = [-59,-59,-55,-51,-50,-46,-45,-45,-39,-40,-40,-41,-46,-50,-50]; y = [-68,-33, -5,-13,-28,-30,-20,-10, -8,-23,-34,-45,-48,-51,-51]; d_correct = true; assert(isequal(isSortedClockwise(x,y),d_correct))
6   Pass
x = flip([-59,-59,-55,-51,-50,-46,-45,-45,-39,-40,-40,-41,-46,-50,-50]); y = flip([-68,-33, -5,-13,-28,-30,-20,-10, -8,-23,-34,-45,-48,-51,-51]); d_correct = false; assert(isequal(isSortedClockwise(x,y),d_correct))
7   Pass
x = [1,1,2,2]; y = [2,1,1,2]; assert(isequal(isSortedClockwise(x,y),false));
8   Pass
x = flip([1,1,2,2]); y = flip([2,1,1,2]); assert(isequal(isSortedClockwise(x,y),true));
9   Pass
x = [-2,-2,-4,-4]; y = [1,3,1,-1]; assert(isequal(isSortedClockwise(x,y),false));
10   Pass
x = flip([-2,-2,-4,-4]); y = flip([1,3,1,-1]); assert(isequal(isSortedClockwise(x,y),true));
11   Pass
r=rand(100,15); a=2*pi*rand(100,1); d=2*(rand(100,1)>.5)-1; x=r.*cos(a*ones(1,15)+d*2*pi*(0:14)/15)+randn(100,1); y=r.*sin(a*ones(1,15)+d*2*pi*(0:14)/15)+randn(100,1); assert(all(arrayfun(@(i)isequal(isSortedClockwise(x(i,:),y(i,:)),d(i)<0),1:100)))

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