Cody

# Problem 1323. Alternating sum

Solution 2045475

Submitted on 4 Dec 2019
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### Test Suite

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

Index exceeds the number of array elements (1). Error in altsum (line 3) y=sum(x(i))+sum(-x(i+1)); Error in Test1 (line 2) assert(isequal(altsum(x),508))

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

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

Index exceeds the number of array elements (3). Error in altsum (line 3) y=sum(x(i))+sum(-x(i+1)); Error in Test3 (line 2) assert(isequal(altsum(x),-15))

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

Assertion failed.

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

Index exceeds the number of array elements (7). Error in altsum (line 3) y=sum(x(i))+sum(-x(i+1)); Error in Test5 (line 2) assert(isequal(altsum(x),2694))