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alternatingSums
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| function alternatingSums(a) { | |
| var sum = a.reduce(function(acc, val,currentIndex) { | |
| if(currentIndex%2==0) | |
| acc[0] += val; | |
| else | |
| acc[1] += val; | |
| return acc; | |
| }, [0,0]); | |
| return sum; | |
| } |
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