Cody

Problem 1985. How unique?

Solution 2734765

Submitted on 24 Jul 2020
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Test Suite

Test Status Code Input and Output
1   Fail
A = [2 2 2 3 3 2 3 8 6 5 6]; [U, H] = hunique(A); U_ok = [2 3 8 6 5]; H_ok = [4 3 1 2 1]; assert(isequal(U,U_ok)); assert(isequal(H,H_ok));

Error using histcounts Expected input number 2, edges, to be monotonically increasing. Error in histcounts (line 109) validateattributes(in,{'numeric','logical'},{'vector','nonempty', ... Error in hunique (line 3) [U, H] = histcounts(A, [idx idx(end)]); Error in Test1 (line 2) [U, H] = hunique(A);

2   Fail
A = [2 2 2 3 3 2 3 8 6 5 6 8]; [U, H] = hunique(A); U_ok = [2 3 8 6 5]; H_ok = [4 3 2 2 1]; assert(isequal(U,U_ok)); assert(isequal(H,H_ok));

Error using histcounts Expected input number 2, edges, to be monotonically increasing. Error in histcounts (line 109) validateattributes(in,{'numeric','logical'},{'vector','nonempty', ... Error in hunique (line 3) [U, H] = histcounts(A, [idx idx(end)]); Error in Test2 (line 2) [U, H] = hunique(A);

3   Fail
A = 100:-11:1; assert(isequal(hunique(A),A)); [~,H] = hunique(A); assert(isequal(H,ones(1,10)));

Error using histcounts Expected input number 2, edges, to be monotonically increasing. Error in histcounts (line 109) validateattributes(in,{'numeric','logical'},{'vector','nonempty', ... Error in hunique (line 3) [U, H] = histcounts(A, [idx idx(end)]); Error in Test3 (line 2) assert(isequal(hunique(A),A));

4   Fail
A = randi([-10 10],1,100); [U,H] = hunique(A); assert(sum(H)==numel(A)); assert(isequal(unique(A),sort(U))); % number of test cases may increace in the future. % any proposals of test cases warmly welcome.

Error using histcounts Expected input number 2, edges, to be monotonically increasing. Error in histcounts (line 109) validateattributes(in,{'numeric','logical'},{'vector','nonempty', ... Error in hunique (line 3) [U, H] = histcounts(A, [idx idx(end)]); Error in Test4 (line 2) [U,H] = hunique(A);

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