Cody

# Problem 1180. Knights and Knaves (part 2)

Solution 2361488

Submitted on 24 May 2020
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### Test Suite

Test Status Code Input and Output
1   Fail
A=[true true false false true false true]; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); clear g A; assert(isequal(solver(f),false))

Error using Test1>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test1 (line 7) assert(isequal(solver(f),false))

2   Fail
A=[false true false true false]; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); clear g A; assert(isequal(solver(f),true))

Error using Test2>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test2 (line 7) assert(isequal(solver(f),true))

3   Fail
A=[false false true true true]; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); clear g A; assert(isequal(solver(f),false))

Error using Test3>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test3 (line 7) assert(isequal(solver(f),false))

4   Fail
A=[true false false true false false true true true]; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); clear g A; assert(isequal(solver(f),false))

Error using Test4>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test4 (line 7) assert(isequal(solver(f),false))

5   Fail
A=rand(1,99)<.5; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); assert(isequal(solver(f),mean(A)<.5))

Error using Test5>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test5 (line 6) assert(isequal(solver(f),mean(A)<.5))

6   Fail
A=rand(1,99)<.5; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); assert(isequal(solver(f),mean(A)<.5))

Error using Test6>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test6 (line 6) assert(isequal(solver(f),mean(A)<.5))

7   Fail
A=rand(1,99)<.5; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); assert(isequal(solver(f),mean(A)<.5))

Error using Test7>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test7 (line 6) assert(isequal(solver(f),mean(A)<.5))

8   Fail
A=rand(1,99)<.5; g=inline('logical(interp1([0,1],[0,x],1))','x','A'); f=arrayfun(@(x)@(str)xor(~x,g(eval(str),A)),A,'uni',0); assert(isequal(solver(f),mean(A)<.5))

Error using Test8>@(str)xor(~x,g(eval(str),A)) (line 4) Error: Incorrect use of '=' operator. To assign a value to a variable, use '='. To compare values for equality, use '=='. Error in solver (line 3) A_1_knave = f{1}('sum(A)=0'); %"Are there no knights here?" Error in Test8 (line 6) assert(isequal(solver(f),mean(A)<.5))

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