Cody

# Problem 2130. Orthonormal matrix

Solution 2757754

Submitted on 29 Jul 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
a=[1 0 0 ;0 1 0;0 0 1] tf = 1; assert(isequal(ortho_normal(a),tf))

a = 1 0 0 0 1 0 0 0 1

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test1 (line 3) assert(isequal(ortho_normal(a),tf))

2   Fail
a=[0 0 1 0;0 1 0 0;1 0 0 0;0 0 0 1] tf = 1; assert(isequal(ortho_normal(a),tf))

a = 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 1

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test2 (line 3) assert(isequal(ortho_normal(a),tf))

3   Fail
a=eye(20) k=a; p=a; a(:,1)=k(:,end); a(:,end)=k(:,1); a(:,5)=p(:,9); a(:,9)=p(:,5) tf = 1; assert(isequal(ortho_normal(a),tf))

a = 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 a = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test3 (line 9) assert(isequal(ortho_normal(a),tf))

4   Fail
a=[1 0 1 0;0 1 0 0;1 0 0 0;0 0 0 1] tf = 0; assert(isequal(ortho_normal(a),tf))

a = 1 0 1 0 0 1 0 0 1 0 0 0 0 0 0 1

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test4 (line 3) assert(isequal(ortho_normal(a),tf))

5   Fail
a=[0 0 2 0;0 1 0 0;1 0 -1 0;0 0 0 1] tf = 0; assert(isequal(ortho_normal(a),tf))

a = 0 0 2 0 0 1 0 0 1 0 -1 0 0 0 0 1

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test5 (line 3) assert(isequal(ortho_normal(a),tf))

6   Fail
a=[1 2 3 ;1 1 5;3 0 1] tf = 0; assert(isequal(ortho_normal(a),tf))

a = 1 2 3 1 1 5 3 0 1

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test6 (line 3) assert(isequal(ortho_normal(a),tf))

7   Fail
a =[1 0 0 ;0 0 0; 0 0 0] tf = 0; assert(isequal(ortho_normal(a),tf))

a = 1 0 0 0 0 0 0 0 0

Error: File: ortho_normal.m Line: 4 Column: 11 Invalid syntax for calling function 'abs' on the path. Use a valid syntax or explicitly initialize 'abs' to make it a variable. Error in Test7 (line 3) assert(isequal(ortho_normal(a),tf))