# Python, Simple with Explanation

• Consider the smallest element `x`. It should be paired with the next smallest element, because `min(x, anything) = x`, and having bigger elements only helps you have a larger score. Thus, we should pair adjacent elements together in the sorted array.

``````def arrayPairSum(self, A):
return sum(sorted(A)[::2])
``````

• I don't really understand the problem's meaning,it's describe (an,bn),min(ai,bi) for all i to n but also appears (a1,b2).

• @dick159 What it actually means is that, given an array of say 10 integers(2*5 elements), you can derive 5 pairs of numbers, among each pair, pick the minimum and take the sum.
So that looks like sum of min(each pair).

• return sum(sorted(A)[::2])
If i give input as [1,54,9,97,45,49] expected result via Run Code is 100. But there is no pair in the input that makes Sum as 100.
Expected result according to me is 55.
Am I correct?

• @awice Very good approach!

• @awice It's the simplest and best explanation of this question!

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