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#561 - Array Partition

Easy • View on LeetCode • View on GitHub

Problem Description

Given an integer array nums of 2n integers, group these integers into n pairs (a1, b1), (a2, b2), ..., (an, bn) such that the sum of min(ai, bi) for all i is maximized.

Return the maximized sum.

Solution

/**
 * @param {number[]} nums
 * @return {number}
 */
var arrayPairSum = function(nums) {
  return nums.sort((a, b) => a - b).reduce((sum, v, i, a) =>
    sum + (i % 2 === 0 ? Math.min(v, a[i + 1]) : 0), 0);
};

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