Cody

Problem 1323. Alternating sum

Solution 1584679

Submitted on 16 Jul 2018
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Test Suite

Test Status Code Input and Output
1   Fail
x=508; assert(isequal(altsum(x),508))

a = 508

Array indices must be positive integers or logical values. Error in altsum (line 3) b = [x(0:2:end)] Error in Test1 (line 2) assert(isequal(altsum(x),508))

2   Fail
x=[1692 591]; assert(isequal(altsum(x),1101))

a = 1692

Array indices must be positive integers or logical values. Error in altsum (line 3) b = [x(0:2:end)] Error in Test2 (line 2) assert(isequal(altsum(x),1101))

3   Fail
x=[-644 380 1009]; assert(isequal(altsum(x),-15))

a = -644 1009

Array indices must be positive integers or logical values. Error in altsum (line 3) b = [x(0:2:end)] Error in Test3 (line 2) assert(isequal(altsum(x),-15))

4   Fail
x=[-20 -48 0 -318]; assert(isequal(altsum(x),346))

a = -20 0

Array indices must be positive integers or logical values. Error in altsum (line 3) b = [x(0:2:end)] Error in Test4 (line 2) assert(isequal(altsum(x),346))

5   Fail
x=[1095 -1874 428 896 731 578 40]; assert(isequal(altsum(x),2694))

a = 1095 428 731 40

Array indices must be positive integers or logical values. Error in altsum (line 3) b = [x(0:2:end)] Error in Test5 (line 2) assert(isequal(altsum(x),2694))

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