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@andreytwostep
Last active September 23, 2017 23:06
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function arrayPairSum(nums) {
var sum = 0;
if (nums !== null && nums.length > 1) {
nums.sort();
for (var i = 0; i < nums.length; i += 2) {
sum += nums[i];
}
}
return sum;
}
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