Cody

Problem 1323. Alternating sum

Solution 1584675

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 b = 1×0 empty double row vector y = 1×0 empty double row vector

Assertion failed.

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

a = 1692 b = 591 y = 1101

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

a = -644 1009 b = 380 y = -1024 629

Assertion failed.

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

a = -20 0 b = -48 -318 y = 28 318

Assertion failed.

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

a = 1095 428 731 40 b = -1874 896 578

Matrix dimensions must agree. Error in altsum (line 4) y = a - b Error in Test5 (line 2) assert(isequal(altsum(x),2694))

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