JavaScript/Maths/TwoSum.js at master · ArduinoAficionado/JavaScript · GitHub

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/**

* Given an array of integers, find two numbers that add up to a specific target.

* @param {number[]} nums - The array of integers.

* @param {number} target - The target sum.

* @returns {number[]} - An array containing the indices of the two numbers.

* @example

* const nums = [2, 7, 11, 15];

* const target = 9;

* const result = twoSum(nums, target);

* // The function should return [0, 1] because nums[0] + nums[1] = 2 + 7 = 9.

const TwoSum = (nums, target) => {

const numIndicesMap = new Map()

for (let i = 0; i < nums.length; i++) {

const complement = target - nums[i]

if (numIndicesMap.has(complement)) return [numIndicesMap.get(complement), i]

numIndicesMap.set(nums[i], i)

}

return []

}

export { TwoSum }

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