https://leetcode.cn/problems/two-sum/
/** * @param {number[]} nums * @param {number} target * @return {number[]} */ var twoSum = function(nums, target) { let diffs = {}; for (let i = 0; i < nums.length; i++) { let item = target - nums[i]; if (diffs[item] !== undefined) { return [diffs[item], i]; } diffs[nums[i]] = i; } };
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